#
# Copyright (c) 1998-2005 Richard Nelson. All Rights Reserved.
#
# This file is used to configure Sendmail for use with Debian systems.
#
#
# Copyright (c) 1998-2004 Sendmail, Inc. and its suppliers.
# All rights reserved.
# Copyright (c) 1983, 1995 Eric P. Allman. All rights reserved.
# Copyright (c) 1988, 1993
# The Regents of the University of California. All rights reserved.
#
# By using this file, you agree to the terms and conditions set
# forth in the LICENSE file which can be found at the top level of
# the sendmail distribution.
#
#

######################################################################
######################################################################
#####
##### SENDMAIL CONFIGURATION FILE
#####
##### built by root@fluxtek.com on 六 3月 20 15:40:05 HKT 2010
##### in /root
##### using /usr/share/sendmail/cf/ as configuration include directory
#####
######################################################################
#####
##### DO NOT EDIT THIS FILE! Only edit the source .mc file.
#####
######################################################################
######################################################################

##### $Id: cfhead.m4,v 8.116 2004/01/28 22:02:22 ca Exp $ #####
##### $Id: cf.m4,v 8.32 1999/02/07 07:26:14 gshapiro Exp $ #####
##### $Id: sendmail.mc, v 8.14.3-6 2008-12-06 22:15:17 cowboy Exp $ #####
##### $Id: autoconf.m4, v 8.14.3-6 2008-12-06 22:15:17 cowboy Exp $ #####
##### $Id: debian.m4, v 8.14.3-6 2008-12-06 22:15:17 cowboy Exp $ #####
#
#-------------------------------------------------------------------------
#
# Undocumented features are available in Debian Sendmail 8.14.3-6.
# * none
#
# _FFR_ features are available in Debian Sendmail 8.14.3-6.
# * milter
# * -D_FFR_QUEUE_SCHED_DBG -D_FFR_SKIP_DOMAINS -D_FFR_GROUPREADABLEAUTHINFOFILE -D_FFR_DAEMON_NETUNIX -D_FFR_NO_PIPE -D_FFR_SHM_STATUS -D_FFR_RHS -D_FFR_MAIL_MACRO -D_FFR_QUEUEDELAY=1 -D_FFR_BADRCPT_SHUTDOWN -D_FFR_RESET_MACRO_GLOBALS -D_FFR_TLS_1 -D_FFR_DEAL_WITH_ERROR_SSL
#-------------------------------------------------------------------------
#
# These _FFR_ features are for sendmail.mc processing
#

#-------------------------------------------------------------------------
##### $Id: debian-mta.m4, v 8.14.3-6 2008-12-06 22:15:17 cowboy Exp $ #####


##### $Id: no_default_msa.m4,v 8.2 2001/02/14 05:03:22 gshapiro Exp $ #####

##### $Id: use_cw_file.m4,v 8.11 2001/08/26 20:58:57 gshapiro Exp $ #####


##### $Id: access_db.m4,v 8.27 2006/07/06 21:10:10 ca Exp $ #####

##### $Id: greet_pause.m4,v 1.4 2004/07/06 20:49:51 ca Exp $ #####

##### $Id: delay_checks.m4,v 8.8 2000/12/05 18:50:45 ca Exp $ #####

##### $Id: conncontrol.m4,v 1.4 2004/02/19 21:31:47 ca Exp $ #####


##### $Id: ratecontrol.m4,v 1.5 2004/02/19 21:31:47 ca Exp $ #####



##### $Id: proto.m4,v 8.734 2008/01/24 23:42:01 ca Exp $ #####

# level 10 config file format
V10/Berkeley

# override file safeties - setting this option compromises system security,
# addressing the actual file configuration problem is preferred
# need to set this before any file actions are encountered in the cf file
O DontBlameSendmail= ,AssumeSafeChown,ForwardFileInGroupWritableDirPath,GroupWritableForwardFileSafe,GroupWritableIncludeFileSafe,IncludeFileInGroupWritableDirPath,DontWarnForwardFileInUnsafeDirPath,TrustStickyBit,NonRootSafeAddr,GroupWritableIncludeFile,GroupReadableaDefaultAuthInfoFile

# default LDAP map specification
# need to set this now before any LDAP maps are defined
#O LDAPDefaultSpec=-h localhost

##################
# local info #
##################

# my LDAP cluster
# need to set this before any LDAP lookups are done (including classes)
#D{sendmailMTACluster}$m

Cwlocalhost
# file containing names of hosts for which we receive email
Fw/etc/mail/local-host-names %[^\#]

# my official domain name
# ... define this only if sendmail cannot automatically determine your domain
#Dj$w.Foo.COM

# host/domain names ending with a token in class P are canonical
CP.

# "Smart" relay host (may be null)
DS


# operators that cannot be in local usernames (i.e., network indicators)
CO @ % !

# a class with just dot (for identifying canonical names)
C..

# a class with just a left bracket (for identifying domain literals)
C[[

# access_db acceptance class
C{Accept}OK RELAY


# Resolve map (to check if a host exists in check_mail)
Kresolve host -a<OKR> -T<TEMP>
C{ResOk}OKR


# Hosts for which relaying is permitted ($=R)
FR-o /etc/mail/relay-domains %[^\#]

# arithmetic map
Karith arith
# macro storage map
Kmacro macro
# possible values for TLS_connection in access map
C{Tls}VERIFY ENCR





# dequoting map
Kdequote dequote

# class E: names that should be exposed as from this host, even if we masquerade
# class L: names that should be delivered locally, even if we have a relay
# class M: domains that should be converted to $M
# class N: domains that should not be converted to $M
#CL root



# my name for error messages
DnMAILER-DAEMON


# Access list database (for spam stomping)
Kaccess hash -T<TMPF> /etc/mail/access

# Configuration version number
DZ8.14.3/Debian-6


###############
# Options #
###############

# strip message body to 7 bits on input?
O SevenBitInput=False

# 8-bit data handling
#O EightBitMode=pass8

# wait for alias file rebuild (default units: minutes)
O AliasWait=10

# location of alias file
O AliasFile=/etc/mail/aliases

# minimum number of free blocks on filesystem
O MinFreeBlocks=100

# maximum message size
#O MaxMessageSize=0

# substitution for space (blank) characters
O BlankSub=.

# avoid connecting to "expensive" mailers on initial submission?
O HoldExpensive=False

# checkpoint queue runs after every N successful deliveries
#O CheckpointInterval=10

# default delivery mode
O DeliveryMode=background

# error message header/file
#O ErrorHeader=/etc/mail/error-header

# error mode
#O ErrorMode=print

# save Unix-style "From_" lines at top of header?
#O SaveFromLine=False

# queue file mode (qf files)
O QueueFileMode=0640

# temporary file mode
O TempFileMode=0640

# match recipients against GECOS field?
#O MatchGECOS=False

# maximum hop count
O MaxHopCount=100

# location of help file
O HelpFile=/etc/mail/helpfile

# ignore dots as terminators in incoming messages?
#O IgnoreDots=False

# name resolver options
O ResolverOptions=+WorkAroundBrokenAAAA

# deliver MIME-encapsulated error messages?
O SendMimeErrors=True

# Forward file search path
O ForwardPath=$z/.forward.$w:$z/.forward

# open connection cache size
O ConnectionCacheSize=2

# open connection cache timeout
O ConnectionCacheTimeout=5m

# persistent host status directory
#O HostStatusDirectory=.hoststat

# single thread deliveries (requires HostStatusDirectory)?
#O SingleThreadDelivery=False

# use Errors-To: header?
O UseErrorsTo=False

# log level
O LogLevel=9

# send to me too, even in an alias expansion?
O MeToo=True

# verify RHS in newaliases?
O CheckAliases=False

# default messages to old style headers if no special punctuation?
O OldStyleHeaders=True

# SMTP daemon options
O DaemonPortOptions=Name=MTA

# SMTP client options
#O ClientPortOptions=Family=inet, Address=0.0.0.0

# Modifiers to define {daemon_flags} for direct submissions
#O DirectSubmissionModifiers

# Use as mail submission program? See sendmail/SECURITY
#O UseMSP

# privacy flags
O PrivacyOptions=needmailhelo,needexpnhelo,needvrfyhelo,restrictqrun,restrictexpand,nobodyreturn,authwarnings

# who (if anyone) should get extra copies of error messages
#O PostmasterCopy=Postmaster

# slope of queue-only function
#O QueueFactor=600000

# limit on number of concurrent queue runners
#O MaxQueueChildren

# maximum number of queue-runners per queue-grouping with multiple queues
O MaxRunnersPerQueue=5

# priority of queue runners (nice(3))
#O NiceQueueRun

# shall we sort the queue by hostname first?
#O QueueSortOrder=priority

# minimum time in queue before retry
#O MinQueueAge=30m

# how many jobs can you process in the queue?
#O MaxQueueRunSize=0

# perform initial split of envelope without checking MX records
#O FastSplit=1

# queue directory
O QueueDirectory=/var/spool/mqueue

# key for shared memory; 0 to turn off, -1 to auto-select
#O SharedMemoryKey=0

# file to store auto-selected key for shared memory (SharedMemoryKey = -1)
#O SharedMemoryKeyFile

# timeouts (many of these)
#O Timeout.initial=5m
#O Timeout.connect=5m
#O Timeout.aconnect=0s
O Timeout.iconnect=2m
#O Timeout.helo=5m
O Timeout.mail=2m
#O Timeout.rcpt=1h
O Timeout.datainit=2m
#O Timeout.datablock=1h
#O Timeout.datafinal=1h
O Timeout.rset=1m
O Timeout.quit=2m
#O Timeout.misc=2m
O Timeout.command=5m
O Timeout.ident=5s
#O Timeout.fileopen=60s
#O Timeout.control=2m
O Timeout.queuereturn=5d
#O Timeout.queuereturn.normal=5d
#O Timeout.queuereturn.urgent=2d
#O Timeout.queuereturn.non-urgent=7d
#O Timeout.queuereturn.dsn=5d
O Timeout.queuewarn=4h
#O Timeout.queuewarn.normal=4h
#O Timeout.queuewarn.urgent=1h
#O Timeout.queuewarn.non-urgent=12h
#O Timeout.queuewarn.dsn=4h
#O Timeout.hoststatus=30m
#O Timeout.resolver.retrans=5s
#O Timeout.resolver.retrans.first=5s
#O Timeout.resolver.retrans.normal=5s
#O Timeout.resolver.retry=4
#O Timeout.resolver.retry.first=4
#O Timeout.resolver.retry.normal=4
#O Timeout.lhlo=2m
#O Timeout.auth=10m
#O Timeout.starttls=1h

# time for DeliverBy; extension disabled if less than 0
#O DeliverByMin=0

# should we not prune routes in route-addr syntax addresses?
#O DontPruneRoutes=False

# queue up everything before forking?
O SuperSafe=True

# status file
O StatusFile=/var/lib/sendmail/sendmail.st

# time zone handling:
# if undefined, use system default
# if defined but null, use TZ envariable passed in
# if defined and non-null, use that info
#O TimeZoneSpec=

# default UID (can be username or userid:groupid)
O DefaultUser=mail:mail

# list of locations of user database file (null means no lookup)
#O UserDatabaseSpec=/etc/mail/userdb

# fallback MX host
#O FallbackMXhost=fall.back.host.net

# fallback smart host
#O FallbackSmartHost=fall.back.host.net

# if we are the best MX host for a site, try it directly instead of config err
#O TryNullMXList=False

# load average at which we just queue messages
#O QueueLA=8

# load average at which we refuse connections
#O RefuseLA=12

# log interval when refusing connections for this long
#O RejectLogInterval=3h

# load average at which we delay connections; 0 means no limit
#O DelayLA=0

# maximum number of children we allow at one time
O MaxDaemonChildren=0

# maximum number of new connections per second
O ConnectionRateThrottle=15

# Width of the window
O ConnectionRateWindowSize=10m

# work recipient factor
#O RecipientFactor=30000

# deliver each queued job in a separate process?
#O ForkEachJob=False

# work class factor
#O ClassFactor=1800

# work time factor
#O RetryFactor=90000

# default character set
#O DefaultCharSet=unknown-8bit

# service switch file (name hardwired on Solaris, Ultrix, OSF/1, others)
#O ServiceSwitchFile=/etc/mail/service.switch

# hosts file (normally /etc/hosts)
#O HostsFile=/etc/hosts

# dialup line delay on connection failure
#O DialDelay=0s

# action to take if there are no recipients in the message
#O NoRecipientAction=none

# chrooted environment for writing to files
O SafeFileEnvironment=/

# are colons OK in addresses?
#O ColonOkInAddr=True

# shall I avoid expanding CNAMEs (violates protocols)?
#O DontExpandCnames=False

# SMTP initial login message (old $e macro)
O SmtpGreetingMessage=$j Sendmail $v/$Z; $b; (No UCE/UBE) $?{client_addr}logging access from: ${client_name}(${client_resolve})-$_$.

# UNIX initial From header format (old $l macro)
O UnixFromLine=From $g $d

# From: lines that have embedded newlines are unwrapped onto one line
#O SingleLineFromHeader=False

# Allow HELO SMTP command that does not include a host name
#O AllowBogusHELO=False

# Characters to be quoted in a full name phrase (@,;:\()[] are automatic)
O MustQuoteChars=.'

# delimiter (operator) characters (old $o macro)
O OperatorChars=.:%@!^/[]+

# shall I avoid calling initgroups(3) because of high NIS costs?
#O DontInitGroups=False

# are group-writable :include: and .forward files (un)trustworthy?
# True (the default) means they are not trustworthy.
#O UnsafeGroupWrites=True


# where do errors that occur when sending errors get sent?
#O DoubleBounceAddress=postmaster

# issue temporary errors (4xy) instead of permanent errors (5xy)?
#O SoftBounce=False

# where to save bounces if all else fails
O DeadLetterDrop=/var/lib/sendmail/dead.letter

# what user id do we assume for the majority of the processing?
#O RunAsUser=sendmail

# maximum number of recipients per SMTP envelope
#O MaxRecipientsPerMessage=0

# limit the rate recipients per SMTP envelope are accepted
# once the threshold number of recipients have been rejected
O BadRcptThrottle=3

# shall we get local names from our installed interfaces?
#O DontProbeInterfaces=False

# Return-Receipt-To: header implies DSN request
O RrtImpliesDsn=False

# override connection address (for testing)
#O ConnectOnlyTo=0.0.0.0

# Trusted user for file ownership and starting the daemon
O TrustedUser=smmta

# Control socket for daemon management
O ControlSocketName=/var/run/sendmail/mta/smcontrol

# Maximum MIME header length to protect MUAs
#O MaxMimeHeaderLength=0/0

# Maximum length of the sum of all headers
#O MaxHeadersLength=32768

# Maximum depth of alias recursion
#O MaxAliasRecursion=10

# location of pid file
O PidFile=/var/run/sendmail/mta/sendmail.pid

# Prefix string for the process title shown on 'ps' listings
O ProcessTitlePrefix=MTA

# Data file (df) memory-buffer file maximum size
#O DataFileBufferSize=4096

# Transcript file (xf) memory-buffer file maximum size
#O XscriptFileBufferSize=4096

# lookup type to find information about local mailboxes
#O MailboxDatabase=pw

# override compile time flag REQUIRES_DIR_FSYNC
#O RequiresDirfsync=true

# list of authentication mechanisms
#O AuthMechanisms=EXTERNAL GSSAPI KERBEROS_V4 DIGEST-MD5 CRAM-MD5
#O DaemonPortOptions=Port=smtp,Addr=0.0.0.0, Name=MTA
# Authentication realm
#O AuthRealm

# default authentication information for outgoing connections
#O DefaultAuthInfo=/etc/mail/default-auth-info

# SMTP AUTH flags
#O AuthOptions

# SMTP AUTH maximum encryption strength
#O AuthMaxBits

# SMTP STARTTLS server options
#O TLSSrvOptions

# Input mail filters
#O InputMailFilters


# CA directory
#O CACertPath
# CA file
#O CACertFile
# Server Cert
#O ServerCertFile
# Server private key
#O ServerKeyFile
# Client Cert
#O ClientCertFile
# Client private key
#O ClientKeyFile
# File containing certificate revocation lists
#O CRLFile
# DHParameters (only required if DSA/DH is used)
#O DHParameters
# Random data source (required for systems without /dev/urandom under OpenSSL)
#O RandFile

# Maximum number of "useless" commands before slowing down
#O MaxNOOPCommands=20

# Name to use for EHLO (defaults to $j)
#O HeloName

############################
# QUEUE GROUP DEFINITIONS #
############################


###########################
# Message precedences #
###########################

Pfirst-class=0
Pspecial-delivery=100
Plist=-30
Pbulk=-60
Pjunk=-100

#####################
# Trusted users #
#####################

# this is equivalent to setting class "t"
#Ft/etc/mail/trusted-users %[^\#]
Troot
Tdaemon
Tuucp

#########################
# Format of headers #
#########################

H?P?Return-Path: <$g>
HReceived: $?sfrom $s $.$?_($?s$|from $.$_)
$.$?{auth_type}(authenticated$?{auth_ssf} bits=${auth_ssf}$.)
$.by $j ($v/$Z)$?r with $r$. id $i$?{tls_version}
(version=${tls_version} cipher=${cipher} bits=${cipher_bits} verify=${verify})$.$?u
for $u; $|;
$.$b
H?D?Resent-Date: $a
H?D?Date: $a
H?F?Resent-From: $?x$x <$g>$|$g$.
H?F?From: $?x$x <$g>$|$g$.
H?x?Full-Name: $x
# HPosted-Date: $a
# H?l?Received-Date: $b
H?M?Resent-Message-Id: <$t.$i@$j>
H?M?Message-Id: <$t.$i@$j>

#
######################################################################
######################################################################
#####
##### REWRITING RULES
#####
######################################################################
######################################################################

############################################
### Ruleset 3 -- Name Canonicalization ###
############################################
Scanonify=3

# handle null input (translate to <@> special case)
R$@ $@ <@>

# strip group: syntax (not inside angle brackets!) and trailing semicolon
R$* $: $1 <@> mark addresses
R$* < $* > $* <@> $: $1 < $2 > $3 unmark <addr>
R@ $* <@> $: @ $1 unmark @host:...
R$* [ IPv6 : $+ ] <@> $: $1 [ IPv6 : $2 ] unmark IPv6 addr
R$* :: $* <@> $: $1 :: $2 unmark node::addr
R:include: $* <@> $: :include: $1 unmark :include:...
R$* : $* [ $* ] $: $1 : $2 [ $3 ] <@> remark if leading colon
R$* : $* <@> $: $2 strip colon if marked
R$* <@> $: $1 unmark
R$* ; $1 strip trailing semi
R$* < $+ :; > $* $@ $2 :; <@> catch <list:;>
R$* < $* ; > $1 < $2 > bogus bracketed semi

# null input now results from list:; syntax
R$@ $@ :; <@>

# strip angle brackets -- note RFC733 heuristic to get innermost item
R$* $: < $1 > housekeeping <>
R$+ < $* > < $2 > strip excess on left
R< $* > $+ < $1 > strip excess on right
R<> $@ < @ > MAIL FROM:<> case
R< $+ > $: $1 remove housekeeping <>

# strip route address <@a,@b,@c:user@d> -> <user@d>
R@ $+ , $+ $2
R@ [ $* ] : $+ $2
R@ $+ : $+ $2

# find focus for list syntax
R $+ : $* ; @ $+ $@ $>Canonify2 $1 : $2 ; < @ $3 > list syntax
R $+ : $* ; $@ $1 : $2; list syntax

# find focus for @ syntax addresses
R$+ @ $+ $: $1 < @ $2 > focus on domain
R$+ < $+ @ $+ > $1 $2 < @ $3 > move gaze right
R$+ < @ $+ > $@ $>Canonify2 $1 < @ $2 > already canonical


# convert old-style addresses to a domain-based address
R$- ! $+ $@ $>Canonify2 $2 < @ $1 .UUCP > resolve uucp names
R$+ . $- ! $+ $@ $>Canonify2 $3 < @ $1 . $2 > domain uucps
R$+ ! $+ $@ $>Canonify2 $2 < @ $1 .UUCP > uucp subdomains

# if we have % signs, take the rightmost one
R$* % $* $1 @ $2 First make them all @s.
R$* @ $* @ $* $1 % $2 @ $3 Undo all but the last.
R$* @ $* $@ $>Canonify2 $1 < @ $2 > Insert < > and finish

# else we must be a local name
R$* $@ $>Canonify2 $1


################################################
### Ruleset 96 -- bottom half of ruleset 3 ###
################################################

SCanonify2=96

# handle special cases for local names
R$* < @ localhost > $* $: $1 < @ $j . > $2 no domain at all
R$* < @ localhost . $m > $* $: $1 < @ $j . > $2 local domain
R$* < @ localhost . UUCP > $* $: $1 < @ $j . > $2 .UUCP domain

# check for IPv4/IPv6 domain literal
R$* < @ [ $+ ] > $* $: $1 < @@ [ $2 ] > $3 mark [addr]
R$* < @@ $=w > $* $: $1 < @ $j . > $3 self-literal
R$* < @@ $+ > $* $@ $1 < @ $2 > $3 canon IP addr





# if really UUCP, handle it immediately

# try UUCP traffic as a local address
R$* < @ $+ . UUCP > $* $: $1 < @ $[ $2 $] . UUCP . > $3
R$* < @ $+ . . UUCP . > $* $@ $1 < @ $2 . > $3

# hostnames ending in class P are always canonical
R$* < @ $* $=P > $* $: $1 < @ $2 $3 . > $4
R$* < @ $* $~P > $* $: $&{daemon_flags} $| $1 < @ $2 $3 > $4
R$* CC $* $| $* < @ $+.$+ > $* $: $3 < @ $4.$5 . > $6
R$* CC $* $| $* $: $3
# pass to name server to make hostname canonical
R$* $| $* < @ $* > $* $: $2 < @ $[ $3 $] > $4
R$* $| $* $: $2

# local host aliases and pseudo-domains are always canonical
R$* < @ $=w > $* $: $1 < @ $2 . > $3
R$* < @ $=M > $* $: $1 < @ $2 . > $3
R$* < @ $* . . > $* $1 < @ $2 . > $3


##################################################
### Ruleset 4 -- Final Output Post-rewriting ###
##################################################
Sfinal=4

R$+ :; <@> $@ $1 : handle <list:;>
R$* <@> $@ handle <> and list:;

# strip trailing dot off possibly canonical name
R$* < @ $+ . > $* $1 < @ $2 > $3

# eliminate internal code
R$* < @ *LOCAL* > $* $1 < @ $j > $2

# externalize local domain info
R$* < $+ > $* $1 $2 $3 defocus
R@ $+ : @ $+ : $+ @ $1 , @ $2 : $3 <route-addr> canonical
R@ $* $@ @ $1 ... and exit

# UUCP must always be presented in old form
R$+ @ $- . UUCP $2!$1 u@h.UUCP => h!u

# delete duplicate local names
R$+ % $=w @ $=w $1 @ $2 u%host@host => u@host



##############################################################
### Ruleset 97 -- recanonicalize and call ruleset zero ###
### (used for recursive calls) ###
##############################################################

SRecurse=97
R$* $: $>canonify $1
R$* $@ $>parse $1


######################################
### Ruleset 0 -- Parse Address ###
######################################

Sparse=0

R$* $: $>Parse0 $1 initial parsing
R<@> $#local $: <@> special case error msgs
R$* $: $>ParseLocal $1 handle local hacks
R$* $: $>Parse1 $1 final parsing

#
# Parse0 -- do initial syntax checking and eliminate local addresses.
# This should either return with the (possibly modified) input
# or return with a #error mailer. It should not return with a
# #mailer other than the #error mailer.
#

SParse0
R<@> $@ <@> special case error msgs
R$* : $* ; <@> $#error $@ 5.1.3 $: "553 List:; syntax illegal for recipient addresses"
R@ <@ $* > < @ $1 > catch "@@host" bogosity
R<@ $+> $#error $@ 5.1.3 $: "553 User address required"
R$+ <@> $#error $@ 5.1.3 $: "553 Hostname required"
R$* $: <> $1
R<> $* < @ [ $* ] : $+ > $* $1 < @ [ $2 ] : $3 > $4
R<> $* < @ [ $* ] , $+ > $* $1 < @ [ $2 ] , $3 > $4
R<> $* < @ [ $* ] $+ > $* $#error $@ 5.1.2 $: "553 Invalid address"
R<> $* < @ [ $+ ] > $* $1 < @ [ $2 ] > $3
R<> $* <$* : $* > $* $#error $@ 5.1.3 $: "553 Colon illegal in host name part"
R<> $* $1
R$* < @ . $* > $* $#error $@ 5.1.2 $: "553 Invalid host name"
R$* < @ $* .. $* > $* $#error $@ 5.1.2 $: "553 Invalid host name"
R$* < @ $* @ > $* $#error $@ 5.1.2 $: "553 Invalid route address"
R$* @ $* < @ $* > $* $#error $@ 5.1.3 $: "553 Invalid route address"
R$* , $~O $* $#error $@ 5.1.3 $: "553 Invalid route address"


# now delete the local info -- note $=O to find characters that cause forwarding
R$* < @ > $* $@ $>Parse0 $>canonify $1 user@ => user
R< @ $=w . > : $* $@ $>Parse0 $>canonify $2 @here:... -> ...
R$- < @ $=w . > $: $(dequote $1 $) < @ $2 . > dequote "foo"@here
R< @ $+ > $#error $@ 5.1.3 $: "553 User address required"
R$* $=O $* < @ $=w . > $@ $>Parse0 $>canonify $1 $2 $3 ...@here -> ...
R$- $: $(dequote $1 $) < @ *LOCAL* > dequote "foo"
R< @ *LOCAL* > $#error $@ 5.1.3 $: "553 User address required"
R$* $=O $* < @ *LOCAL* >
$@ $>Parse0 $>canonify $1 $2 $3 ...@*LOCAL* -> ...
R$* < @ *LOCAL* > $: $1

#
# Parse1 -- the bottom half of ruleset 0.
#

SParse1

# handle numeric address spec
R$* < @ [ $+ ] > $* $: $>ParseLocal $1 < @ [ $2 ] > $3 numeric internet spec
R$* < @ [ $+ ] > $* $: $1 < @ [ $2 ] : $S > $3 Add smart host to path
R$* < @ [ $+ ] : > $* $#esmtp $@ [$2] $: $1 < @ [$2] > $3 no smarthost: send
R$* < @ [ $+ ] : $- : $*> $* $#$3 $@ $4 $: $1 < @ [$2] > $5 smarthost with mailer
R$* < @ [ $+ ] : $+ > $* $#esmtp $@ $3 $: $1 < @ [$2] > $4 smarthost without mailer


# short circuit local delivery so forwarded email works


R$=L < @ $=w . > $#local $: @ $1 special local names
R$+ < @ $=w . > $#local $: $1 regular local name


# resolve remotely connected UUCP links (if any)

# resolve fake top level domains by forwarding to other hosts



# pass names that still have a host to a smarthost (if defined)
R$* < @ $* > $* $: $>MailerToTriple < $S > $1 < @ $2 > $3 glue on smarthost name

# deal with other remote names
R$* < @$* > $* $#esmtp $@ $2 $: $1 < @ $2 > $3 user@host.domain

# handle locally delivered names
R$=L $#local $: @ $1 special local names
R$+ $#local $: $1 regular local names

###########################################################################
### Ruleset 5 -- special rewriting after aliases have been expanded ###
###########################################################################

SLocal_localaddr
Slocaladdr=5
R$+ $: $1 $| $>"Local_localaddr" $1
R$+ $| $#ok $@ $1 no change
R$+ $| $#$* $#$2
R$+ $| $* $: $1




# deal with plussed users so aliases work nicely
R$+ + * $#local $@ $&h $: $1
R$+ + $* $#local $@ + $2 $: $1 + *

# prepend an empty "forward host" on the front
R$+ $: <> $1



R< > $+ $: < > < $1 <> $&h > nope, restore +detail

R< > < $+ <> + $* > $: < > < $1 + $2 > check whether +detail
R< > < $+ <> $* > $: < > < $1 > else discard
R< > < $+ + $* > $* < > < $1 > + $2 $3 find the user part
R< > < $+ > + $* $#local $@ $2 $: @ $1 strip the extra +
R< > < $+ > $@ $1 no +detail
R$+ $: $1 <> $&h add +detail back in

R$+ <> + $* $: $1 + $2 check whether +detail
R$+ <> $* $: $1 else discard
R< local : $* > $* $: $>MailerToTriple < local : $1 > $2 no host extension
R< error : $* > $* $: $>MailerToTriple < error : $1 > $2 no host extension

R< $~[ : $+ > $+ $: $>MailerToTriple < $1 : $2 > $3 < @ $2 >

R< $+ > $+ $@ $>MailerToTriple < $1 > $2 < @ $1 >


###################################################################
### Ruleset 95 -- canonify mailer:[user@]host syntax to triple ###
###################################################################

SMailerToTriple=95
R< > $* $@ $1 strip off null relay
R< error : $-.$-.$- : $+ > $* $#error $@ $1.$2.$3 $: $4
R< error : $- : $+ > $* $#error $@ $(dequote $1 $) $: $2
R< error : $+ > $* $#error $: $1
R< local : $* > $* $>CanonLocal < $1 > $2
R< $~[ : $+ @ $+ > $*<$*>$* $# $1 $@ $3 $: $2<@$3> use literal user
R< $~[ : $+ > $* $# $1 $@ $2 $: $3 try qualified mailer
R< $=w > $* $@ $2 delete local host
R< $+ > $* $#relay $@ $1 $: $2 use unqualified mailer

###################################################################
### Ruleset CanonLocal -- canonify local: syntax ###
###################################################################

SCanonLocal
# strip local host from routed addresses
R< $* > < @ $+ > : $+ $@ $>Recurse $3
R< $* > $+ $=O $+ < @ $+ > $@ $>Recurse $2 $3 $4

# strip trailing dot from any host name that may appear
R< $* > $* < @ $* . > $: < $1 > $2 < @ $3 >

# handle local: syntax -- use old user, either with or without host
R< > $* < @ $* > $* $#local $@ $1@$2 $: $1
R< > $+ $#local $@ $1 $: $1

# handle local:user@host syntax -- ignore host part
R< $+ @ $+ > $* < @ $* > $: < $1 > $3 < @ $4 >

# handle local:user syntax
R< $+ > $* <@ $* > $* $#local $@ $2@$3 $: $1
R< $+ > $* $#local $@ $2 $: $1

###################################################################
### Ruleset 93 -- convert header names to masqueraded form ###
###################################################################

SMasqHdr=93


# do not masquerade anything in class N
R$* < @ $* $=N . > $@ $1 < @ $2 $3 . >

R$* < @ *LOCAL* > $@ $1 < @ $j . >

###################################################################
### Ruleset 94 -- convert envelope names to masqueraded form ###
###################################################################

SMasqEnv=94
R$* < @ *LOCAL* > $* $: $1 < @ $j . > $2

###################################################################
### Ruleset 98 -- local part of ruleset zero (can be null) ###
###################################################################

SParseLocal=98



######################################################################
### D: LookUpDomain -- search for domain in access database
###
### Parameters:
### <$1> -- key (domain name)
### <$2> -- default (what to return if not found in db)
### <$3> -- mark (must be <(!|+) single-token>)
### ! does lookup only with tag
### + does lookup with and without tag
### <$4> -- passthru (additional data passed unchanged through)
######################################################################

SD
R<$*> <$+> <$- $-> <$*> $: < $(access $4:$1 $: ? $) > <$1> <$2> <$3 $4> <$5>
R<?> <$+> <$+> <+ $-> <$*> $: < $(access $1 $: ? $) > <$1> <$2> <+ $3> <$4>
R<SKIP> <$+> <$+> <$- $-> <$*> $@ <$2> <$5>
R<?> <[$+.$-]> <$+> <$- $-> <$*> $@ $>D <[$1]> <$3> <$4 $5> <$6>
R<?> <[$+::$-]> <$+> <$- $-> <$*> $: $>D <[$1]> <$3> <$4 $5> <$6>
R<?> <[$+:$-]> <$+> <$- $-> <$*> $: $>D <[$1]> <$3> <$4 $5> <$6>
R<?> <$+.$+> <$+> <$- $-> <$*> $@ $>D <$2> <$3> <$4 $5> <$6>
R<?> <$+> <$+> <$- $-> <$*> $@ <$2> <$5>
R<$* <TMPF>> <$+> <$+> <$- $-> <$*> $@ <<TMPF>> <$6>
R<$*> <$+> <$+> <$- $-> <$*> $@ <$1> <$6>

######################################################################
### A: LookUpAddress -- search for host address in access database
###
### Parameters:
### <$1> -- key (dot quadded host address)
### <$2> -- default (what to return if not found in db)
### <$3> -- mark (must be <(!|+) single-token>)
### ! does lookup only with tag
### + does lookup with and without tag
### <$4> -- passthru (additional data passed through)
######################################################################

SA
R<$+> <$+> <$- $-> <$*> $: < $(access $4:$1 $: ? $) > <$1> <$2> <$3 $4> <$5>
R<?> <$+> <$+> <+ $-> <$*> $: < $(access $1 $: ? $) > <$1> <$2> <+ $3> <$4>
R<SKIP> <$+> <$+> <$- $-> <$*> $@ <$2> <$5>
R<?> <$+::$-> <$+> <$- $-> <$*> $@ $>A <$1> <$3> <$4 $5> <$6>
R<?> <$+:$-> <$+> <$- $-> <$*> $@ $>A <$1> <$3> <$4 $5> <$6>
R<?> <$+.$-> <$+> <$- $-> <$*> $@ $>A <$1> <$3> <$4 $5> <$6>
R<?> <$+> <$+> <$- $-> <$*> $@ <$2> <$5>
R<$* <TMPF>> <$+> <$+> <$- $-> <$*> $@ <<TMPF>> <$6>
R<$*> <$+> <$+> <$- $-> <$*> $@ <$1> <$6>

######################################################################
### CanonAddr -- Convert an address into a standard form for
### relay checking. Route address syntax is
### crudely converted into a %-hack address.
###
### Parameters:
### $1 -- full recipient address
###
### Returns:
### parsed address, not in source route form
######################################################################

SCanonAddr
R$* $: $>Parse0 $>canonify $1 make domain canonical


######################################################################
### ParseRecipient -- Strip off hosts in $=R as well as possibly
### $* $=m or the access database.
### Check user portion for host separators.
###
### Parameters:
### $1 -- full recipient address
###
### Returns:
### parsed, non-local-relaying address
######################################################################

SParseRecipient
R$* $: <?> $>CanonAddr $1
R<?> $* < @ $* . > <?> $1 < @ $2 > strip trailing dots
R<?> $- < @ $* > $: <?> $(dequote $1 $) < @ $2 > dequote local part

# if no $=O character, no host in the user portion, we are done
R<?> $* $=O $* < @ $* > $: <NO> $1 $2 $3 < @ $4>
R<?> $* $@ $1


R<NO> $* < @ $* $=R > $: <RELAY> $1 < @ $2 $3 >
R<NO> $* < @ $+ > $: $>D <$2> <NO> <+ To> <$1 < @ $2 >>
R<$+> <$+> $: <$1> $2



R<RELAY> $* < @ $* > $@ $>ParseRecipient $1
R<$+> $* $@ $2


######################################################################
### check_relay -- check hostname/address on SMTP startup
######################################################################

Scheck_relay
R$* $: $>"RateControl" dummy
R$* $: $>"ConnControl" dummy

SLocal_check_relay
Scheckrelay
R$* $: $1 $| $>"Local_check_relay" $1
R$* $| $* $| $#$* $#$3
R$* $| $* $| $* $@ $>"Basic_check_relay" $1 $| $2

SBasic_check_relay
# check for deferred delivery mode
R$* $: < $&{deliveryMode} > $1
R< d > $* $@ deferred
R< $* > $* $: $2

R$+ $| $+ $: $>D < $1 > <?> <+ Connect> < $2 >
R $| $+ $: $>A < $1 > <?> <+ Connect> <> empty client_name
R<?> <$+> $: $>A < $1 > <?> <+ Connect> <> no: another lookup
R<?> <$*> $: OK found nothing
R<$={Accept}> <$*> $@ $1 return value of lookup
R<REJECT> <$*> $#error $@ 5.7.1 $: "550 Access denied"
R<DISCARD> <$*> $#discard $: discard
R<QUARANTINE:$+> <$*> $#error $@ quarantine $: $1
R<ERROR:$-.$-.$-:$+> <$*> $#error $@ $1.$2.$3 $: $4
R<ERROR:$+> <$*> $#error $: $1
R<$* <TMPF>> <$*> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."
R<$+> <$*> $#error $: $1





######################################################################
### check_mail -- check SMTP `MAIL FROM:' command argument
######################################################################

SLocal_check_mail
Scheckmail
R$* $: $1 $| $>"Local_check_mail" $1
R$* $| $#$* $#$2
R$* $| $* $@ $>"Basic_check_mail" $1

SBasic_check_mail
# check for deferred delivery mode
R$* $: < $&{deliveryMode} > $1
R< d > $* $@ deferred
R< $* > $* $: $2

# authenticated?
R$* $: $1 $| $>"tls_client" $&{verify} $| MAIL
R$* $| $#$+ $#$2
R$* $| $* $: $1

R<> $@ <OK> we MUST accept <> (RFC 1123)
R$+ $: <?> $1
R<?><$+> $: <@> <$1>
R<?>$+ $: <@> <$1>
R$* $: $&{daemon_flags} $| $1
R$* f $* $| <@> < $* @ $- > $: < ? $&{client_name} > < $3 @ $4 >
R$* u $* $| <@> < $* > $: <?> < $3 >
R$* $| $* $: $2
# handle case of @localhost on address
R<@> < $* @ localhost > $: < ? $&{client_name} > < $1 @ localhost >
R<@> < $* @ [127.0.0.1] >
$: < ? $&{client_name} > < $1 @ [127.0.0.1] >
R<@> < $* @ localhost.$m >
$: < ? $&{client_name} > < $1 @ localhost.$m >
R<@> < $* @ localhost.UUCP >
$: < ? $&{client_name} > < $1 @ localhost.UUCP >
R<@> $* $: $1 no localhost as domain
R<? $=w> $* $: $2 local client: ok
R<? $+> <$+> $#error $@ 5.5.4 $: "553 Real domain name required for sender address"
R<?> $* $: $1
R$* $: <?> $>CanonAddr $1 canonify sender address and mark it
R<?> $* < @ $+ . > <?> $1 < @ $2 > strip trailing dots
# handle non-DNS hostnames (*.bitnet, *.decnet, *.uucp, etc)
R<?> $* < @ $* $=P > $: <OKR> $1 < @ $2 $3 >
R<?> $* < @ $j > $: <OKR> $1 < @ $j >
R<?> $* < @ $+ > $: <? $(resolve $2 $: $2 <PERM> $) > $1 < @ $2 >
R<? $* <$->> $* < @ $+ >
$: <$2> $3 < @ $4 >

# check sender address: user@address, user@, address
R<$+> $+ < @ $* > $: @<$1> <$2 < @ $3 >> $| <F:$2@$3> <U:$2@> <D:$3>
R<$+> $+ $: @<$1> <$2> $| <U:$2@>
R@ <$+> <$*> $| <$+> $: <@> <$1> <$2> $| $>SearchList <+ From> $| <$3> <>
R<@> <$+> <$*> $| <$*> $: <$3> <$1> <$2> reverse result
# retransform for further use
R<?> <$+> <$*> $: <$1> $2 no match
R<$+> <$+> <$*> $: <$1> $3 relevant result, keep it

# handle case of no @domain on address
R<?> $* $: $&{daemon_flags} $| <?> $1
R$* u $* $| <?> $* $: <OKR> $3
R$* $| $* $: $2
R<?> $* $: < ? $&{client_addr} > $1
R<?> $* $@ <OKR> ...local unqualed ok
R<? $+> $* $#error $@ 5.5.4 $: "553 Domain name required for sender address " $&f
...remote is not
# check results
R<?> $* $: @ $1 mark address: nothing known about it
R<$={ResOk}> $* $: @ $2 domain ok
R<TEMP> $* $#error $@ 4.1.8 $: "451 Domain of sender address " $&f " does not resolve"
R<PERM> $* $#error $@ 5.1.8 $: "553 Domain of sender address " $&f " does not exist"
R<$={Accept}> $* $# $1 accept from access map
R<DISCARD> $* $#discard $: discard
R<QUARANTINE:$+> $* $#error $@ quarantine $: $1
R<REJECT> $* $#error $@ 5.7.1 $: "550 Access denied"
R<ERROR:$-.$-.$-:$+> $* $#error $@ $1.$2.$3 $: $4
R<ERROR:$+> $* $#error $: $1
R<<TMPF>> $* $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."
R<$+> $* $#error $: $1 error from access db



######################################################################
### check_rcpt -- check SMTP `RCPT TO:' command argument
######################################################################

SLocal_check_rcpt
Scheckrcpt
R$* $: $1 $| $>"Local_check_rcpt" $1
R$* $| $#$* $#$2
R$* $| $* $@ $>"Basic_check_rcpt" $1

SBasic_check_rcpt
# empty address?
R<> $#error $@ nouser $: "553 User address required"
R$@ $#error $@ nouser $: "553 User address required"
# check for deferred delivery mode
R$* $: < $&{deliveryMode} > $1
R< d > $* $@ deferred
R< $* > $* $: $2


######################################################################
R$* $: $1 $| @ $>"Rcpt_ok" $1
R$* $| @ $#TEMP $+ $: $1 $| T $2
R$* $| @ $#$* $#$2
R$* $| @ RELAY $@ RELAY
R$* $| @ $* $: O $| $>"Relay_ok" $1
R$* $| T $+ $: T $2 $| $>"Relay_ok" $1
R$* $| $#TEMP $+ $#error $2
R$* $| $#$* $#$2
R$* $| RELAY $@ RELAY
R T $+ $| $* $#error $1
# anything else is bogus
R$* $#error $@ 5.7.1 $: "550 Relaying denied"


######################################################################
### Rcpt_ok: is the recipient ok?
######################################################################
SRcpt_ok
R$* $: $>ParseRecipient $1 strip relayable hosts




# authenticated via TLS?
R$* $: $1 $| $>RelayTLS client authenticated?
R$* $| $# $+ $# $2 error/ok?
R$* $| $* $: $1 no

R$* $: $1 $| $>"Local_Relay_Auth" $&{auth_type}
R$* $| $# $* $# $2
R$* $| NO $: $1
R$* $| $* $: $1 $| $&{auth_type}
R$* $| $: $1
R$* $| $={TrustAuthMech} $# RELAY
R$* $| $* $: $1
# anything terminating locally is ok
R$+ < @ $=w > $@ RELAY
R$+ < @ $* $=R > $@ RELAY
R$+ < @ $+ > $: $>D <$2> <?> <+ To> <$1 < @ $2 >>
R<RELAY> $* $@ RELAY
R<$* <TMPF>> $* $#TEMP $@ 4.3.0 $: "451 Temporary system failure. Please try again later."
R<$*> <$*> $: $2



# check for local user (i.e. unqualified address)
R$* $: <?> $1
R<?> $* < @ $+ > $: <REMOTE> $1 < @ $2 >
# local user is ok
R<?> $+ $@ RELAY
R<$+> $* $: $2

######################################################################
### Relay_ok: is the relay/sender ok?
######################################################################
SRelay_ok
# anything originating locally is ok
# check IP address
R$* $: $&{client_addr}
R$@ $@ RELAY originated locally
R0 $@ RELAY originated locally
R127.0.0.1 $@ RELAY originated locally
RIPv6:::1 $@ RELAY originated locally
R$=R $* $@ RELAY relayable IP address
R$* $: $>A <$1> <?> <+ Connect> <$1>
R<RELAY> $* $@ RELAY relayable IP address

R<<TMPF>> $* $#TEMP $@ 4.3.0 $: "451 Temporary system failure. Please try again later."
R<$*> <$*> $: $2
R$* $: [ $1 ] put brackets around it...
R$=w $@ RELAY ... and see if it is local


# check client name: first: did it resolve?
R$* $: < $&{client_resolve} >
R<TEMP> $#TEMP $@ 4.4.0 $: "450 Relaying temporarily denied. Cannot resolve PTR record for " $&{client_addr}
R<FORGED> $#error $@ 5.7.1 $: "550 Relaying denied. IP name possibly forged " $&{client_name}
R<FAIL> $#error $@ 5.7.1 $: "550 Relaying denied. IP name lookup failed " $&{client_name}
R$* $: <@> $&{client_name}
# pass to name server to make hostname canonical
R<@> $* $=P $:<?> $1 $2
R<@> $+ $:<?> $[ $1 $]
R$* . $1 strip trailing dots
R<?> $=w $@ RELAY
R<?> $* $=R $@ RELAY
R<?> $* $: $>D <$1> <?> <+ Connect> <$1>
R<RELAY> $* $@ RELAY
R<$* <TMPF>> $* $#TEMP $@ 4.3.0 $: "451 Temporary system failure. Please try again later."
R<$*> <$*> $: $2

# turn a canonical address in the form user<@domain>
# qualify unqual. addresses with $j
SFullAddr
R$* <@ $+ . > $1 <@ $2 >
R$* <@ $* > $@ $1 <@ $2 >
R$+ $@ $1 <@ $j >

SDelay_TLS_Clt
# authenticated?
R$* $: $1 $| $>"tls_client" $&{verify} $| MAIL
R$* $| $#$+ $#$2
R$* $| $* $# $1
R$* $# $1

SDelay_TLS_Clt2
# authenticated?
R$* $: $1 $| $>"tls_client" $&{verify} $| MAIL
R$* $| $#$+ $#$2
R$* $| $* $@ $1
R$* $@ $1

# call all necessary rulesets
Scheck_rcpt
# R$@ $#error $@ 5.1.3 $: "553 Recipient address required"

R$+ $: $1 $| $>checkrcpt $1
R$+ $| $#error $* $#error $2
R$+ $| $#discard $* $#discard $2
R$+ $| $#$* $@ $>"Delay_TLS_Clt" $2
R$+ $| $* $: <?> $>FullAddr $>CanonAddr $1
R<?> $+ < @ $=w > $: <> $1 < @ $2 > $| <F: $1@$2 > <D: $2 > <U: $1@>
R<?> $+ < @ $* > $: <> $1 < @ $2 > $| <F: $1@$2 > <D: $2 >
# lookup the addresses only with Spam tag
R<> $* $| <$+> $: <@> $1 $| $>SearchList <! Spam> $| <$2> <>
R<@> $* $| $* $: $2 $1 reverse result
# is the recipient a spam friend?
R<FRIEND> $+ $@ $>"Delay_TLS_Clt2" SPAMFRIEND
R<$*> $+ $: $2

R$* $: $1 $| $>checkmail $&{mail_from}
R$* $| $#$* $#$2
R$* $| $* $: $1 $| $>checkrelay $&{client_name} $| $&{client_addr}
R$* $| $#$* $#$2
R$* $| $* $: $1



######################################################################
### F: LookUpFull -- search for an entry in access database
###
### lookup of full key (which should be an address) and
### variations if +detail exists: +* and without +detail
###
### Parameters:
### <$1> -- key
### <$2> -- default (what to return if not found in db)
### <$3> -- mark (must be <(!|+) single-token>)
### ! does lookup only with tag
### + does lookup with and without tag
### <$4> -- passthru (additional data passed unchanged through)
######################################################################

SF
R<$+> <$*> <$- $-> <$*> $: <$(access $4:$1 $: ? $)> <$1> <$2> <$3 $4> <$5>
R<?> <$+> <$*> <+ $-> <$*> $: <$(access $1 $: ? $)> <$1> <$2> <+ $3> <$4>
R<?> <$+ + $* @ $+> <$*> <$- $-> <$*>
$: <$(access $6:$1+*@$3 $: ? $)> <$1+$2@$3> <$4> <$5 $6> <$7>
R<?> <$+ + $* @ $+> <$*> <+ $-> <$*>
$: <$(access $1+*@$3 $: ? $)> <$1+$2@$3> <$4> <+ $5> <$6>
R<?> <$+ + $* @ $+> <$*> <$- $-> <$*>
$: <$(access $6:$1@$3 $: ? $)> <$1+$2@$3> <$4> <$5 $6> <$7>
R<?> <$+ + $* @ $+> <$*> <+ $-> <$*>
$: <$(access $1@$3 $: ? $)> <$1+$2@$3> <$4> <+ $5> <$6>
R<?> <$+> <$*> <$- $-> <$*> $@ <$2> <$5>
R<$+ <TMPF>> <$*> <$- $-> <$*> $@ <<TMPF>> <$5>
R<$+> <$*> <$- $-> <$*> $@ <$1> <$5>

######################################################################
### E: LookUpExact -- search for an entry in access database
###
### Parameters:
### <$1> -- key
### <$2> -- default (what to return if not found in db)
### <$3> -- mark (must be <(!|+) single-token>)
### ! does lookup only with tag
### + does lookup with and without tag
### <$4> -- passthru (additional data passed unchanged through)
######################################################################

SE
R<$*> <$*> <$- $-> <$*> $: <$(access $4:$1 $: ? $)> <$1> <$2> <$3 $4> <$5>
R<?> <$+> <$*> <+ $-> <$*> $: <$(access $1 $: ? $)> <$1> <$2> <+ $3> <$4>
R<?> <$+> <$*> <$- $-> <$*> $@ <$2> <$5>
R<$+ <TMPF>> <$*> <$- $-> <$*> $@ <<TMPF>> <$5>
R<$+> <$*> <$- $-> <$*> $@ <$1> <$5>

######################################################################
### U: LookUpUser -- search for an entry in access database
###
### lookup of key (which should be a local part) and
### variations if +detail exists: +* and without +detail
###
### Parameters:
### <$1> -- key (user@)
### <$2> -- default (what to return if not found in db)
### <$3> -- mark (must be <(!|+) single-token>)
### ! does lookup only with tag
### + does lookup with and without tag
### <$4> -- passthru (additional data passed unchanged through)
######################################################################

SU
R<$+> <$*> <$- $-> <$*> $: <$(access $4:$1 $: ? $)> <$1> <$2> <$3 $4> <$5>
R<?> <$+> <$*> <+ $-> <$*> $: <$(access $1 $: ? $)> <$1> <$2> <+ $3> <$4>
R<?> <$+ + $* @> <$*> <$- $-> <$*>
$: <$(access $5:$1+*@ $: ? $)> <$1+$2@> <$3> <$4 $5> <$6>
R<?> <$+ + $* @> <$*> <+ $-> <$*>
$: <$(access $1+*@ $: ? $)> <$1+$2@> <$3> <+ $4> <$5>
R<?> <$+ + $* @> <$*> <$- $-> <$*>
$: <$(access $5:$1@ $: ? $)> <$1+$2@> <$3> <$4 $5> <$6>
R<?> <$+ + $* @> <$*> <+ $-> <$*>
$: <$(access $1@ $: ? $)> <$1+$2@> <$3> <+ $4> <$5>
R<?> <$+> <$*> <$- $-> <$*> $@ <$2> <$5>
R<$+ <TMPF>> <$*> <$- $-> <$*> $@ <<TMPF>> <$5>
R<$+> <$*> <$- $-> <$*> $@ <$1> <$5>

######################################################################
### SearchList: search a list of items in the access map
### Parameters:
### <exact tag> $| <mark:address> <mark:address> ... <>
### where "exact" is either "+" or "!":
### <+ TAG> lookup with and w/o tag
### <! TAG> lookup with tag
### possible values for "mark" are:
### D: recursive host lookup (LookUpDomain)
### E: exact lookup, no modifications
### F: full lookup, try user+ext@domain and user@domain
### U: user lookup, try user+ext and user (input must have trailing @)
### return: <RHS of lookup> or <?> (not found)
######################################################################

# class with valid marks for SearchList
C{Src}E F D U A
SSearchList
# just call the ruleset with the name of the tag... nice trick...
R<$+> $| <$={Src}:$*> <$*> $: <$1> $| <$4> $| $>$2 <$3> <?> <$1> <>
R<$+> $| <> $| <?> <> $@ <?>
R<$+> $| <$+> $| <?> <> $@ $>SearchList <$1> $| <$2>
R<$+> $| <$*> $| <$+> <> $@ <$3>
R<$+> $| <$+> $@ <$2>


######################################################################
### trust_auth: is user trusted to authenticate as someone else?
###
### Parameters:
### $1: AUTH= parameter from MAIL command
######################################################################

SLocal_trust_auth
Strust_auth
R$* $: $&{auth_type} $| $1
# required by RFC 2554 section 4.
R$@ $| $* $#error $@ 5.7.1 $: "550 not authenticated"
R$* $| $&{auth_authen} $@ identical
R$* $| <$&{auth_authen}> $@ identical
R$* $| $* $: $1 $| $>"Local_trust_auth" $2
R$* $| $#$* $#$2
R$* $#error $@ 5.7.1 $: "550 " $&{auth_authen} " not allowed to act as " $&{auth_author}

######################################################################
### Relay_Auth: allow relaying based on authentication?
###
### Parameters:
### $1: ${auth_type}
######################################################################
SLocal_Relay_Auth

######################################################################
### srv_features: which features to offer to a client?
### (done in server)
######################################################################
Ssrv_features
R$* $: $>D <$&{client_name}> <?> <! "Srv_Features"> <>
R<?>$* $: $>A <$&{client_addr}> <?> <! "Srv_Features"> <>
R<?>$* $: <$(access "Srv_Features": $: ? $)>
R<?>$* $@ OK
R<$* <TMPF>>$* $#temp
R<$+>$* $# $1

######################################################################
### try_tls: try to use STARTTLS?
### (done in client)
######################################################################
Stry_tls
R$* $: $>D <$&{server_name}> <?> <! "Try_TLS"> <>
R<?>$* $: $>A <$&{server_addr}> <?> <! "Try_TLS"> <>
R<?>$* $: <$(access "Try_TLS": $: ? $)>
R<?>$* $@ OK
R<$* <TMPF>>$* $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."
R<NO>$* $#error $@ 5.7.1 $: "550 do not try TLS with " $&{server_name} " ["$&{server_addr}"]"

######################################################################
### tls_rcpt: is connection with server "good" enough?
### (done in client, per recipient)
###
### Parameters:
### $1: recipient
######################################################################
Stls_rcpt
R$* $: $(macro {TLS_Name} $@ $&{server_name} $) $1
R$+ $: <?> $>CanonAddr $1
R<?> $+ < @ $+ . > <?> $1 <@ $2 >
R<?> $+ < @ $+ > $: $1 <@ $2 > $| <F:$1@$2> <U:$1@> <D:$2> <E:>
R<?> $+ $: $1 $| <U:$1@> <E:>
R$* $| $+ $: $1 $| $>SearchList <! "TLS_Rcpt"> $| $2 <>
R$* $| <?> $@ OK
R$* $| <$* <TMPF>> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."
R$* $| <$+> $@ $>"TLS_connection" $&{verify} $| <$2>

######################################################################
### tls_client: is connection with client "good" enough?
### (done in server)
###
### Parameters:
### ${verify} $| (MAIL|STARTTLS)
######################################################################
Stls_client
R$* $: $(macro {TLS_Name} $@ $&{server_name} $) $1
R$* $| $* $: $1 $| $>D <$&{client_name}> <?> <! "TLS_Clt"> <>
R$* $| <?>$* $: $1 $| $>A <$&{client_addr}> <?> <! "TLS_Clt"> <>
R$* $| <?>$* $: $1 $| <$(access "TLS_Clt": $: ? $)>
R$* $| <$* <TMPF>> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."
R$* $@ $>"TLS_connection" $1

######################################################################
### tls_server: is connection with server "good" enough?
### (done in client)
###
### Parameter:
### ${verify}
######################################################################
Stls_server
R$* $: $(macro {TLS_Name} $@ $&{server_name} $) $1
R$* $: $1 $| $>D <$&{server_name}> <?> <! "TLS_Srv"> <>
R$* $| <?>$* $: $1 $| $>A <$&{server_addr}> <?> <! "TLS_Srv"> <>
R$* $| <?>$* $: $1 $| <$(access "TLS_Srv": $: ? $)>
R$* $| <$* <TMPF>> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."
R$* $@ $>"TLS_connection" $1

######################################################################
### TLS_connection: is TLS connection "good" enough?
###
### Parameters:
### ${verify} $| <Requirement> [<>]
### Requirement: RHS from access map, may be ? for none.
######################################################################
STLS_connection
R$* $| <$*>$* $: $1 $| <$2>
# create the appropriate error codes
R$* $| <PERM + $={Tls} $*> $: $1 $| <503:5.7.0> <$2 $3>
R$* $| <TEMP + $={Tls} $*> $: $1 $| <403:4.7.0> <$2 $3>
R$* $| <$={Tls} $*> $: $1 $| <403:4.7.0> <$2 $3>
# deal with TLS handshake failures: abort
RSOFTWARE $| <$-:$+> $* $#error $@ $2 $: $1 " TLS handshake failed."
RSOFTWARE $| $* $#error $@ 4.7.0 $: "403 TLS handshake failed."
# deal with TLS protocol errors: abort
RPROTOCOL $| <$-:$+> $* $#error $@ $2 $: $1 " STARTTLS failed."
RPROTOCOL $| $* $#error $@ 4.7.0 $: "403 STARTTLS failed."
R$* $| <$*> <VERIFY> $: <$2> <VERIFY> <> $1
R$* $| <$*> <VERIFY + $+> $: <$2> <VERIFY> <$3> $1
R$* $| <$*> <$={Tls}:$->$* $: <$2> <$3:$4> <> $1
R$* $| <$*> <$={Tls}:$- + $+>$* $: <$2> <$3:$4> <$5> $1
R$* $| $* $@ OK
# authentication required: give appropriate error
# other side did authenticate (via STARTTLS)
R<$*><VERIFY> <> OK $@ OK
R<$*><VERIFY> <$+> OK $: <$1> <REQ:0> <$2>
R<$*><VERIFY:$-> <$*> OK $: <$1> <REQ:$2> <$3>
R<$*><ENCR:$-> <$*> $* $: <$1> <REQ:$2> <$3>
R<$-:$+><VERIFY $*> <$*> $#error $@ $2 $: $1 " authentication required"
R<$-:$+><VERIFY $*> <$*> FAIL $#error $@ $2 $: $1 " authentication failed"
R<$-:$+><VERIFY $*> <$*> NO $#error $@ $2 $: $1 " not authenticated"
R<$-:$+><VERIFY $*> <$*> NOT $#error $@ $2 $: $1 " no authentication requested"
R<$-:$+><VERIFY $*> <$*> NONE $#error $@ $2 $: $1 " other side does not support STARTTLS"
R<$-:$+><VERIFY $*> <$*> $+ $#error $@ $2 $: $1 " authentication failure " $4
R<$*><REQ:$-> <$*> $: <$1> <REQ:$2> <$3> $>max $&{cipher_bits} : $&{auth_ssf}
R<$*><REQ:$-> <$*> $- $: <$1> <$2:$4> <$3> $(arith l $@ $4 $@ $2 $)
R<$-:$+><$-:$-> <$*> TRUE $#error $@ $2 $: $1 " encryption too weak " $4 " less than " $3
R<$-:$+><$-:$-> <$*> $* $: <$1:$2 ++ $5>
R<$-:$+ ++ > $@ OK
R<$-:$+ ++ $+ > $: <$1:$2> <$3>
R<$-:$+> < $+ ++ $+ > <$1:$2> <$3> <$4>
R<$-:$+> $+ $@ $>"TLS_req" $3 $| <$1:$2>

######################################################################
### TLS_req: check additional TLS requirements
###
### Parameters: [<list> <of> <req>] $| <$-:$+>
### $-: SMTP reply code
### $+: Enhanced Status Code
######################################################################
STLS_req
R $| $+ $@ OK
R<CN> $* $| <$+> $: <CN:$&{TLS_Name}> $1 $| <$2>
R<CN:$&{cn_subject}> $* $| <$+> $@ $>"TLS_req" $1 $| <$2>
R<CN:$+> $* $| <$-:$+> $#error $@ $4 $: $3 " CN " $&{cn_subject} " does not match " $1
R<CS:$&{cert_subject}> $* $| <$+> $@ $>"TLS_req" $1 $| <$2>
R<CS:$+> $* $| <$-:$+> $#error $@ $4 $: $3 " Cert Subject " $&{cert_subject} " does not match " $1
R<CI:$&{cert_issuer}> $* $| <$+> $@ $>"TLS_req" $1 $| <$2>
R<CI:$+> $* $| <$-:$+> $#error $@ $4 $: $3 " Cert Issuer " $&{cert_issuer} " does not match " $1
ROK $@ OK

######################################################################
### max: return the maximum of two values separated by :
###
### Parameters: [$-]:[$-]
######################################################################
Smax
R: $: 0
R:$- $: $1
R$-: $: $1
R$-:$- $: $(arith l $@ $1 $@ $2 $) : $1 : $2
RTRUE:$-:$- $: $2
R$-:$-:$- $: $2


######################################################################
### RelayTLS: allow relaying based on TLS authentication
###
### Parameters:
### none
######################################################################
SRelayTLS
# authenticated?
R$* $: <?> $&{verify}
R<?> OK $: OK authenticated: continue
R<?> $* $@ NO not authenticated
R$* $: $&{cert_issuer}
R$+ $: $(access CERTISSUER:$1 $)
RRELAY $# RELAY
RSUBJECT $: <@> $&{cert_subject}
R<@> $+ $: <@> $(access CERTSUBJECT:$1 $)
R<@> RELAY $# RELAY
R$* $: NO

######################################################################
### authinfo: lookup authinfo in the access map
###
### Parameters:
### $1: {server_name}
### $2: {server_addr}
######################################################################
Sauthinfo
R$* $: $1 $| $>D <$&{server_name}> <?> <! AuthInfo> <>
R$* $| <?>$* $: $1 $| $>A <$&{server_addr}> <?> <! AuthInfo> <>
R$* $| <?>$* $: $1 $| <$(access AuthInfo: $: ? $)> <>
R$* $| <?>$* $@ no no authinfo available
R$* $| <$*> <> $# $2

######################################################################
### RateControl:
### Parameters: ignored
### return: $#error or OK
######################################################################
SRateControl
R$* $: <A:$&{client_addr}> <E:>
R$+ $: $>SearchList <! ClientRate> $| $1 <>
R<?> $@ OK
R<$* <TMPF>> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."
R<0> $@ OK no limit
R<$+> $: <$1> $| $(arith l $@ $1 $@ $&{client_rate} $)
R<$+> $| TRUE $#error $@ 4.3.2 $: 421 Connection rate limit exceeded.


######################################################################
### ConnControl:
### Parameters: ignored
### return: $#error or OK
######################################################################
SConnControl
R$* $: <A:$&{client_addr}> <E:>
R$+ $: $>SearchList <! ClientConn> $| $1 <>
R<?> $@ OK
R<$* <TMPF>> $#error $@ 4.3.0 $: "451 Temporary system failure. Please try again later."
R<0> $@ OK no limit
R<$+> $: <$1> $| $(arith l $@ $1 $@ $&{client_connections} $)
R<$+> $| TRUE $#error $@ 4.3.2 $: 421 Too many open connections.





######################################################################
### greet_pause: lookup pause time before 220 greeting
###
### Parameters:
### $1: {client_name}
### $2: {client_addr}
######################################################################
SLocal_greet_pause
Sgreet_pause
R$* $: <$1><?> $| $>"Local_greet_pause" $1
R<$*><?> $| $#$* $#$2
R<$*><?> $| $* $: $1
R$+ $| $+ $: $>D < $1 > <?> <! GreetPause> < $2 >
R $| $+ $: $>A < $1 > <?> <! GreetPause> <> empty client_name
R<?> <$+> $: $>A < $1 > <?> <! GreetPause> <> no: another lookup
R<?> <$*> $# 1000
R<$* <TMPF>> <$*> $@
R<$+> <$*> $# $1
#
######################################################################
######################################################################
#####
##### MAIL FILTER DEFINITIONS
#####
######################################################################
######################################################################

#
######################################################################
######################################################################
#####
##### MAILER DEFINITIONS
#####
######################################################################
######################################################################



##################################################
### Local and Program Mailer specification ###
##################################################

##### $Id: local.m4,v 8.59 2004/11/23 00:37:25 ca Exp $ #####

#
# Envelope sender rewriting
#
SEnvFromL
R<@> $n errors to mailer-daemon
R@ <@ $*> $n temporarily bypass Sun bogosity
R$+ $: $>AddDomain $1 add local domain if needed
R$* $: $>MasqEnv $1 do masquerading

#
# Envelope recipient rewriting
#
SEnvToL
R$+ < @ $* > $: $1 strip host part
R$+ + $* $: < $&{addr_type} > $1 + $2 mark with addr type
R<e s> $+ + $* $: $1 remove +detail for sender
R< $* > $+ $: $2 else remove mark

#
# Header sender rewriting
#
SHdrFromL
R<@> $n errors to mailer-daemon
R@ <@ $*> $n temporarily bypass Sun bogosity
R$+ $: $>AddDomain $1 add local domain if needed
R$* $: $>MasqHdr $1 do masquerading

#
# Header recipient rewriting
#
SHdrToL
R$+ $: $>AddDomain $1 add local domain if needed
R$* < @ *LOCAL* > $* $: $1 < @ $j . > $2

#
# Common code to add local domain name (only if always-add-domain)
#
SAddDomain

Mlocal, P=/usr/sbin/sensible-mda, F=lsDFMAw5:/|@qPn9S, S=EnvFromL/HdrFromL, R=EnvToL/HdrToL,
T=DNS/RFC822/X-Unix,
A=sensible-mda $g $u $h ${client_addr}
Mprog, P=/bin/sh, F=lsDFMoqeu9, S=EnvFromL/HdrFromL, R=EnvToL/HdrToL, D=$z:/,
T=X-Unix/X-Unix/X-Unix,
A=sh -c $u

#####################################
### SMTP Mailer specification ###
#####################################

##### $Id: smtp.m4,v 8.65 2006/07/12 21:08:10 ca Exp $ #####

#
# common sender and masquerading recipient rewriting
#
SMasqSMTP
R$* < @ $* > $* $@ $1 < @ $2 > $3 already fully qualified
R$+ $@ $1 < @ *LOCAL* > add local qualification

#
# convert pseudo-domain addresses to real domain addresses
#
SPseudoToReal

# pass <route-addr>s through
R< @ $+ > $* $@ < @ $1 > $2 resolve <route-addr>

# output fake domains as user%fake@relay

# do UUCP heuristics; note that these are shared with UUCP mailers
R$+ < @ $+ .UUCP. > $: < $2 ! > $1 convert to UUCP form
R$+ < @ $* > $* $@ $1 < @ $2 > $3 not UUCP form

# leave these in .UUCP form to avoid further tampering
R< $&h ! > $- ! $+ $@ $2 < @ $1 .UUCP. >
R< $&h ! > $-.$+ ! $+ $@ $3 < @ $1.$2 >
R< $&h ! > $+ $@ $1 < @ $&h .UUCP. >
R< $+ ! > $+ $: $1 ! $2 < @ $Y > use UUCP_RELAY
R$+ < @ $~[ $* : $+ > $@ $1 < @ $4 > strip mailer: part
R$+ < @ > $: $1 < @ *LOCAL* > if no UUCP_RELAY


#
# envelope sender rewriting
#
SEnvFromSMTP
R$+ $: $>PseudoToReal $1 sender/recipient common
R$* :; <@> $@ list:; special case
R$* $: $>MasqSMTP $1 qualify unqual'ed names
R$+ $: $>MasqEnv $1 do masquerading


#
# envelope recipient rewriting --
# also header recipient if not masquerading recipients
#
SEnvToSMTP
R$+ $: $>PseudoToReal $1 sender/recipient common
R$+ $: $>MasqSMTP $1 qualify unqual'ed names
R$* < @ *LOCAL* > $* $: $1 < @ $j . > $2

#
# header sender and masquerading header recipient rewriting
#
SHdrFromSMTP
R$+ $: $>PseudoToReal $1 sender/recipient common
R:; <@> $@ list:; special case

# do special header rewriting
R$* <@> $* $@ $1 <@> $2 pass null host through
R< @ $* > $* $@ < @ $1 > $2 pass route-addr through
R$* $: $>MasqSMTP $1 qualify unqual'ed names
R$+ $: $>MasqHdr $1 do masquerading


#
# relay mailer header masquerading recipient rewriting
#
SMasqRelay
R$+ $: $>MasqSMTP $1
R$+ $: $>MasqHdr $1

Msmtp, P=[IPC], F=mDFMuX, S=EnvFromSMTP/HdrFromSMTP, R=EnvToSMTP, E=\r\n, L=990,
T=DNS/RFC822/SMTP,
A=TCP $h
Mesmtp, P=[IPC], F=mDFMuXa, S=EnvFromSMTP/HdrFromSMTP, R=EnvToSMTP, E=\r\n, L=990,
T=DNS/RFC822/SMTP,
A=TCP $h
Msmtp8, P=[IPC], F=mDFMuX8, S=EnvFromSMTP/HdrFromSMTP, R=EnvToSMTP, E=\r\n, L=990,
T=DNS/RFC822/SMTP,
A=TCP $h
Mdsmtp, P=[IPC], F=mDFMuXa%, S=EnvFromSMTP/HdrFromSMTP, R=EnvToSMTP, E=\r\n, L=990,
T=DNS/RFC822/SMTP,
A=TCP $h
Mrelay, P=[IPC], F=mDFMuXa8, S=EnvFromSMTP/HdrFromSMTP, R=MasqSMTP, E=\r\n, L=2040,
T=DNS/RFC822/SMTP,
A=TCP $h