#
# Copyright (c) 1998 Sendmail, Inc.  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@bbs.im.tku.edu.tw on Mon Jul 19 00:03:13 CST 1999
##### in /usr/src/etc/sendmail
##### using /usr/src/etc/sendmail/../../contrib/sendmail/cf/ as configuration include directory
#####
######################################################################
######################################################################

#####  @(#)cfhead.m4	8.23 (Berkeley) 10/6/1998  #####
#####  @(#)cf.m4	8.29 (Berkeley) 5/19/1998  #####
#####  @(#)freebsd.mc	$Revision: 1.1 $  #####

#####  @(#)bsd4.4.m4	8.10 (Berkeley) 10/6/1998  #####

#####  @(#)generic.m4	8.9 (Berkeley) 5/19/1998  #####

#####  @(#)redirect.m4	8.10 (Berkeley) 5/19/1998  #####

#####  @(#)use_cw_file.m4	8.6 (Berkeley) 5/19/1998  #####


#####  @(#)relay_based_on_MX.m4	8.7 (Berkeley) 5/19/1998  #####

#####  @(#)mailertable.m4	8.10 (Berkeley) 10/6/1998  #####

#####  @(#)access_db.m4	8.8 (Berkeley) 5/19/1998  #####

#####  @(#)blacklist_recipients.m4	8.9 (Berkeley) 5/19/1998  #####

#####  @(#)virtusertable.m4	8.8 (Berkeley) 10/6/1998  #####

#####  @(#)rbl.m4	8.8 (Berkeley) 5/19/1998  #####

#####  @(#)local_lmtp.m4	8.5 (Berkeley) 5/19/1998  #####


#####  @(#)proto.m4	8.243 (Berkeley) 2/2/1999  #####


# level 8 config file format
V8/Berkeley

# override file safeties - setting this option compromises system security
# need to set this now for the sake of class files
#O DontBlameSendmail=safe

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

Cwlocalhost
# file containing names of hosts for which we receive email
Fw-o /etc/mail/sendmail.cw

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


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[[

# Mailer table (overriding domains)
Kmailertable hash -o /etc/mail/mailertable





# Virtual user table (maps incoming users)
Kvirtuser hash -o /etc/mail/virtusertable

# Access list database (for spam stomping)
Kaccess hash -o /etc/mail/access

# MX map (to allow relaying to hosts that we MX for)
Kmxserved bestmx -z: -T<TEMP>

# Resolve map (to check if a host exists in check_mail)
Kresolve host -a<OK> -T<TEMP>

# Hosts that will permit relaying ($=R)
FR-o /etc/mail/relay-domains

# who I send unqualified names to (null means deliver locally)
DR

# who gets all local email traffic ($R has precedence for unqualified names)
DH

# 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
#CL root
CE root

# who I masquerade as (null for no masquerading) (see also $=M)
DM

# my name for error messages
DnMAILER-DAEMON


CPREDIRECT

# Configuration version number
DZ8.9.3


###############
#   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/aliases

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

# maximum message size
#O MaxMessageSize=1000000

# 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

# automatically rebuild the alias database?
#O AutoRebuildAliases

# error message header/file
#O ErrorHeader=/etc/sendmail.oE

# error mode
#O ErrorMode=print

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

# temporary file mode
O TempFileMode=0600

# match recipients against GECOS field?
#O MatchGECOS

# maximum hop count
#O MaxHopCount=17

# location of help file
O HelpFile=/usr/share/misc/sendmail.hf

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

# name resolver options
#O ResolverOptions=+AAONLY

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

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

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

# log level
O LogLevel=9

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

# 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=Port=esmtp

# privacy flags
O PrivacyOptions=authwarnings

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

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

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

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

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

# queue up everything before forking?
O SuperSafe=True

# status file
O StatusFile=/var/log/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=mailnull

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

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

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

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

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

# maximum number of children we allow at one time
#O MaxDaemonChildren=12

# maximum number of new connections per second
#O ConnectionRateThrottle=3

# work recipient factor
#O RecipientFactor=30000

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

# work class factor
#O ClassFactor=1800

# work time factor
#O RetryFactor=90000

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

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

# default character set
#O DefaultCharSet=iso-8859-1

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

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

# dialup line delay on connection failure
#O DialDelay=10s

# action to take if there are no recipients in the message
O NoRecipientAction=add-to-undisclosed

# chrooted environment for writing to files
#O SafeFileEnvironment=/arch

# are colons OK in addresses?
#O ColonOkInAddr

# how many jobs can you process in the queue?
#O MaxQueueRunSize=10000

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

# SMTP initial login message (old $e macro)
O SmtpGreetingMessage=$j Sendmail $v/$Z; $b

# 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

# are group-writable :include: and .forward files (un)trustworthy?
#O UnsafeGroupWrites

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

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

# maximum number of recipients per SMTP envelope
#O MaxRecipientsPerMessage=100

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



# Maximum MIME header length to protect MUAs
O MaxMimeHeaderLength=256/128



###########################
#   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/sendmail.ct
Troot
Tdaemon
Tuucp

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

H?P?Return-Path: <$g>
HReceived: $?sfrom $s $.$?_($?s$|from $.$_)
	$.by $j ($v/$Z)$?r with $r$. id $i$?u
	for $u; $|;
	$.$b$?g
	(envelope-from $g)$.
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  ###
############################################
S3

# 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@ $* <@>		$: @ $1				unmark @host:...
R$* :: $* <@>		$: $1 :: $2			unmark node::addr
R:include: $* <@>	$: :include: $1			unmark :include:...
R$* [ $* : $* ] <@>	$: $1 [ $2 : $3 ]		unmark IPv6 addrs
R$* : $* [ $* ]		$: $1 : $2 [ $3 ] <@>		remark if leading colon
R$* : $* <@>		$: $2				strip colon if marked
R$* <@>			$: $1				unmark
R$* ;			   $1				strip trailing semi
R$* < $* ; >		   $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 <>

# make sure <@a,@b,@c:user@d> syntax is easy to parse -- undone later
R@ $+ , $+		@ $1 : $2			change all "," to ":"

# localize and dispose of route-based addresses
R@ $+ : $+		$@ $>96 < @$1 > : $2		handle <route-addr>

# find focus for list syntax
R $+ : $* ; @ $+	$@ $>96 $1 : $2 ; < @ $3 >	list syntax
R $+ : $* ;		$@ $1 : $2;			list syntax

# find focus for @ syntax addresses
R$+ @ $+		$: $1 < @ $2 >			focus on domain
R$+ < $+ @ $+ >		$1 $2 < @ $3 >			move gaze right
R$+ < @ $+ >		$@ $>96 $1 < @ $2 >		already canonical

# do some sanity checking
R$* < @ $* : $* > $*	$1 < @ $2 $3 > $4		nix colons in addrs

# convert old-style addresses to a domain-based address
R$- ! $+		$@ $>96 $2 < @ $1 .UUCP >	resolve uucp names
R$+ . $- ! $+		$@ $>96 $3 < @ $1 . $2 >		domain uucps
R$+ ! $+		$@ $>96 $2 < @ $1 .UUCP >	uucp subdomains

# if we have % signs, take the rightmost one
R$* % $*		$1 @ $2				First make them all @s.
R$* @ $* @ $*		$1 % $2 @ $3			Undo all but the last.
R$* @ $*		$@ $>96 $1 < @ $2 >		Insert < > and finish

# else we must be a local name
R$*			$@ $>96 $1


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

S96

# 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 . > $2		.UUCP domain
R$* < @ [ $+ ] > $*		$: $1 < @@ [ $2 ] > $3		mark [a.b.c.d]
R$* < @@ $=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

# pass to name server to make hostname canonical
R$* < @ $* $~P > $*		$: $1 < @ $[ $2 $3 $] > $4

# local host aliases and pseudo-domains are always canonical
R$* < @ $=w > $*		$: $1 < @ $2 . > $3
R$* < @ $j > $*			$: $1 < @ $j . > $2
R$* < @ $=M > $*		$: $1 < @ $2 . > $3
R$* < @ $* $=P > $*		$: $1 < @ $2 $3 . > $4
R$* < @ $* . . > $*		$1 < @ $2 . > $3


##################################################
###  Ruleset 4 -- Final Output Post-rewriting  ###
##################################################
S4

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

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

# eliminate internal code -- should never get this far!
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)		   ###
##############################################################

S97
R$*			$: $>3 $1
R$*			$@ $>0 $1


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

S0

R$*			$: $>Parse0 $1		initial parsing
# 擋掉 HiNet 跟 SEEDNet 撥接線路來的廣告信
R$*dialup$* $| $*	$#error $@ 5.7.1 $: "no access from dialup system"
R$+ts$+hinet$+ $| $*	$#error $@ 5.7.1 $: "Bye bye, HiNet dialup user..."
# BBS mailer (這行是註解)
R$+.bbs < @ $=w . >	$#bbsmail $: $1		bbs mail gateway
R<@>			$#local $: <@>		special case error msgs
R$*			$: $>98 $1		handle local hacks
R$*			$: $>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 $: "List:; syntax illegal for recipient addresses"
#R@ <@ $* >		< @ $1 >		catch "@@host" bogosity
R<@ $+>			$#error $@ 5.1.3 $: "User address required"
R$*			$: <> $1
R<> $* < @ [ $+ ] > $*	$1 < @ [ $2 ] > $3
R<> $* <$* : $* > $*	$#error $@ 5.1.3 $: "Colon illegal in host name part"
R<> $*			$1
R$* < @ . $* > $*	$#error $@ 5.1.2 $: "Invalid host name"
R$* < @ $* .. $* > $*	$#error $@ 5.1.2 $: "Invalid host name"

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

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

SParse1
# handle numeric address spec
R$* < @ [ $+ ] > $*	$: $>98 $1 < @ [ $2 ] > $3	numeric internet spec
R$* < @ [ $+ ] > $*	$#esmtp $@ [$2] $: $1 < @ [$2] > $3	still numeric: send

# handle virtual users
R$+ < @ $=w . > 	$: < $(virtuser $1 @ $2 $@ $1 $: @ $) > $1 < @ $2 . >
R<@> $+ + $* < @ $* . >
			$: < $(virtuser $1 + * @ $3 $@ $1 $: @ $) > $1 + $2 < @ $3 . >
R<@> $+ + $* < @ $* . >
			$: < $(virtuser $1 @ $3 $@ $1 $: @ $) > $1 + $2 < @ $3 . >
R<@> $+ < @ $+ . >	$: < $(virtuser @ $2 $@ $1 $: @ $) > $1 < @ $2 . >
R<@> $+			$: $1
R< error : $- $+ > $* 	$#error $@ $(dequote $1 $) $: $2
R< $+ > $+ < @ $+ >	$: $>97 $1

# short circuit local delivery so forwarded email works
R$=L < @ $=w . >	$#local $: @ $1		special local names
R$+ < @ $=w . >		$#local $: $1			regular local name

# not local -- try mailer table lookup
R$* <@ $+ > $*		$: < $2 > $1 < @ $2 > $3	extract host name
R< $+ . > $*		$: < $1 > $2			strip trailing dot
R< $+ > $*		$: < $(mailertable $1 $) > $2	lookup
R< $~[ : $* > $* 	$>95 < $1 : $2 > $3		check -- resolved?
R< $+ > $*		$: $>90 <$1> $2			try domain

# 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$* < @ $* > $*		$: $>95 < $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 $: @ $1			special local names
#BBS mailer (這行是註解)
R$+.bbs			$#bbsmail $: $1			bbs mail gateway
R$+			$#local $: $1			regular local names

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

S5

# 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


# see if we have a relay or a hub
R< > $+			$: < $H > $1			try hub
R< > $+			$: < $R > $1			try relay
R< > $+			$: < > < $1 $&h >		nope, restore +detail
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 : $* > $*	$: $>95 < local : $1 > $2	no host extension
R< error : $* > $*	$: $>95 < error : $1 > $2	no host extension
R< $- : $+ > $+		$: $>95 < $1 : $2 > $3 < @ $2 >
R< $+ > $+		$@ $>95 < $1 > $2 < @ $1 >

###################################################################
###  Ruleset 90 -- try domain part of mailertable entry 	###
###################################################################

S90
R$* <$- . $+ > $*	$: $1$2 < $(mailertable .$3 $@ $1$2 $@ $2 $) > $4
R$* <$~[ : $* > $*	$>95 < $2 : $3 > $4		check -- resolved?
R$* < . $+ > $* 	$@ $>90 $1 . <$2> $3		no -- strip & try again
R$* < $* > $*		$: < $(mailertable . $@ $1$2 $) > $3	try "."
R< $~[ : $* > $*	$>95 < $1 : $2 > $3		"." found?
R< $* > $*		$@ $2				no mailertable match

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

S95
R< > $*				$@ $1			strip off null relay
R< error : $- $+ > $*		$#error $@ $(dequote $1 $) $: $2
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< $* > < @ $+ > : $+		$@ $>97 $3
R< $* > $+ $=O $+ < @ $+ >	$@ $>97 $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	###
###################################################################

S93


# special case the users that should be exposed
R$=E < @ *LOCAL* >	$@ $1 < @ $j . >		leave exposed
R$=E < @ $=M . >	$@ $1 < @ $2 . >
R$=E < @ $=w . >	$@ $1 < @ $2 . >

# handle domain-specific masquerading
R$* < @ $=M . > $*	$: $1 < @ $2 . @ $M > $3	convert masqueraded doms
R$* < @ $=w . > $*	$: $1 < @ $2 . @ $M > $3
R$* < @ *LOCAL* > $*	$: $1 < @ $j . @ $M > $2
R$* < @ $+ @ > $*	$: $1 < @ $2 > $3		$M is null
R$* < @ $+ @ $+ > $*	$: $1 < @ $3 . > $4		$M is not null

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

S94
R$* < @ *LOCAL* > $*	$: $1 < @ $j . > $2

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

S98

# addresses sent to foo@host.REDIRECT will give a 551 error code
R$* < @ $+ .REDIRECT. >		$: $1 < @ $2 . REDIRECT . > < ${opMode} >
R$* < @ $+ .REDIRECT. > <i>	$: $1 < @ $2 . REDIRECT. >
R$* < @ $+ .REDIRECT. > < $- >	$# error $@ 5.1.1 $: "551 User has moved; please try " <$1@$2>


######################################################################
###  LookUpDomain -- search for domain in access database
###
###	Parameters:
###		<$1> -- key (domain name)
###		<$2> -- default (what to return if not found in db)
###		<$3> -- passthru (additional data passed unchanged through)
######################################################################

SLookUpDomain
R<$+> <$+> <$*>		$: < $(access $1 $: ? $) > <$1> <$2> <$3>
R<?> <$+.$+> <$+> <$*>	$@ $>LookUpDomain <$2> <$3> <$4>
R<?> <$+> <$+> <$*>	$@ <$2> <$3>
R<$*> <$+> <$+> <$*>	$@ <$1> <$4>

######################################################################
###  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> -- passthru (additional data passed through)
######################################################################

SLookUpAddress
R<$+> <$+> <$*>		$: < $(access $1 $: ? $) > <$1> <$2> <$3>
R<?> <$+.$-> <$+> <$*>	$@ $>LookUpAddress <$1> <$3> <$4>
R<?> <$+> <$+> <$*>	$@ <$2> <$3>
R<$*> <$+> <$+> <$*>	$@ <$1> <$4>

######################################################################
###  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 $>3 $1	make domain canonical
R< @ $+ > : $* @ $*	< @ $1 > : $2 % $3	change @ to % in src route
R$* < @ $+ > : $* : $*	$3 $1 < @ $2 > : $4	change to % hack.
R$* < @ $+ > : $*	$3 $1 < @ $2 >

######################################################################
###  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> $* < @ $+ >		$: <MX> < : $(mxserved $2 $) : > < $1 < @$2 > >
R<MX> < : $* <TEMP> : > $*	$#error $@ 4.7.1 $: "450 Can not check MX records for recipient host " $1
R<MX> < $* : $=w. : $* > < $+ >	$: <RELAY> $4
R<MX> < : $* : > < $+ >		$: <NO> $2

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

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

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

SLocal_check_relay
Scheck_relay
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$+ $| $+		$: $>LookUpDomain < $1 > <?> < $2 >
R<?> < $+ >		$: $>LookUpAddress < $1 > <?> < $1 >
R<?> < $+ >		$: $1
R<OK> < $* >		$@ OK
R<RELAY> < $* >		$@ RELAY
R<REJECT> $*		$#error $@ 5.7.1 $: "550 Access denied"
R<DISCARD> $*		$#discard $: discard
R<$+> $*		$#error $@ 5.7.1 $: $1

# DNS based IP address spam lists
R$*			$: $&{client_addr}
R$-.$-.$-.$-		$: $(host $4.$3.$2.$1.rbl.maps.vix.com. $: OK $)
ROK			$@ OK
R$+			$#error $@ 5.7.1 $: "Mail from " $&{client_addr} " refused by blackhole site rbl.maps.vix.com"

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

SLocal_check_mail
Scheck_mail
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

R<>			$@ <OK>
R$*			$: <?> $>CanonAddr $1
R<?> $* < @ $+ . >	<?> $1 < @ $2 >			strip trailing dots
# handle non-DNS hostnames (*.bitnet, *.decnet, *.uucp, etc)
R<?> $* < $* $=P > $*	$: <OK> $1 < @ $2 $3 > $4
R<?> $* < @ $+ > $*	$: <? $(resolve $2 $: $2 <PERM> $) > $1 < @ $2 > $3
R<? $* <$->> $* < @ $+ > $*
			$: <$2> $3 < @ $4 > $5

# handle case of @localhost on address
R<$+> $* < @localhost >	$: < ? $&{client_name} > <$1> $2 < @localhost >
R<$+> $* < @localhost.$m >
			$: < ? $&{client_name} > <$1> $2 < @localhost.$m >
R<$+> $* < @localhost.UUCP >
			$: < ? $&{client_name} > <$1> $2 < @localhost.UUCP >
R<? $=w> <$+> $*	<?> <$2> $3
R<? $+> <$+> $*		$#error $@ 5.5.4 $: "553 Real domain name required"
R<?> <$+> $*		$: <$1> $2

# lookup localpart (user@)
R<$+> $* < @ $+ > $*	$: <USER $(access $2@ $: ? $) > <$1> $2 < @ $3 > $4
# no match, try full address (user@domain rest)
R<USER ?> <$+> $* < @ $* > $*
			$: <USER $(access $2@$3$4 $: ? $) > <$1> $2 < @ $3 > $4
# no match, try address (user@domain)
R<USER ?> <$+> $+ < @ $+ > $*
			$: <USER $(access $2@$3 $: ? $) > <$1> $2 < @ $3 > $4
# no match, try (sub)domain (domain)
R<USER ?> <$+> $* < @ $+ > $*
			$: $>LookUpDomain <$3> <$1> <>
# check unqualified user in access database
R<?> $*			$: <USER $(access $1@ $: ? $) > <?> $1
# retransform for further use
R<USER $+> <$+> $*	$: <$1> $3

# handle case of no @domain on address
R<?> $*			$: < ? $&{client_name} > $1
R<?> $*			$@ <OK>				...local unqualed ok
R<? $+> $*		$#error $@ 5.5.4 $: "553 Domain name required"
							...remote is not
# check results
R<?> $*			$@ <OK>
R<OK> $*		$@ <OK>
R<TEMP> $*		$#error $@ 4.1.8 $: "451 Sender domain must resolve"
R<PERM> $*		$#error $@ 5.1.8 $: "501 Sender domain must exist"
R<RELAY> $*		$@ <RELAY>
R<DISCARD> $*		$#discard $: discard
R<REJECT> $*		$#error $@ 5.7.1 $: "550 Access denied"
R<$+> $*		$#error $@ 5.7.1 $: $1		error from access db

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

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

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

R$*			$: $>ParseRecipient $1		strip relayable hosts



# blacklist local users or any host from receiving mail
R$*			$: <?> $1
R<?> $+ < @ $=w >	$: <> <USER $1> <FULL $1@$2> <HOST $2> <$1 < @ $2 >>
R<?> $+ < @ $* >	$: <> <FULL $1@$2> <HOST $2> <$1 < @ $2 >>
R<?> $+			$: <> <USER $1> <$1>
R<> <USER $+> $*	$: <$(access $1 $: $)> $2
R<> <FULL $+> $*	$: <$(access $1 $: $)> $2
R<OK> <FULL $+> $*	$: <$(access $1 $: $)> $2
R<> <HOST $+> $*	$: <$(access $1 $: $)> $2
R<OK> <HOST $+> $*	$: <$(access $1 $: $)> $2
R<> <$*>		$: $1
R<OK> <$*>		$: $1
R<RELAY> <$*>		$: $1
R<REJECT> $*		$#error $@ 5.2.1 $: "550 Mailbox disabled for this recipient"
R<$+> $*		$#error $@ 5.2.1 $: $1			error from access db

# anything terminating locally is ok
R$+ < @ $=w >		$@ OK
R$+ < @ $* $=R >	$@ OK
R$+ < @ $* >		$: $>LookUpDomain <$2> <?> <$1 < @ $2 >>
R<RELAY> $*		$@ RELAY
R<$*> <$*>		$: $2

# allow relaying for hosts which we MX serve
R$+ < @ $* >		$: < : $(mxserved $2 $) : > $1 < @ $2 >
R< : $* <TEMP> : > $*	$#error $@ 4.7.1 $: "450 Can not check MX records for recipient host " $1
R<$* : $=w . : $*> $*	$@ OK
R< : $* : > $*		$: $2

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

# anything originating locally is ok
R$*			$: <?> $&{client_name}
# check if bracketed IP address (forward lookup != reverse lookup)
R<?> [$+]		$: <BAD> [$1]
# pass to name server to make hostname canonical
R<?> $* $~P 		$: <?> $[ $1 $2 $]
R<$-> $*		$: $2
R$* .			$1				strip trailing dots
R$@			$@ OK
R$=w			$@ OK
R$* $=R			$@ OK
R$*			$: $>LookUpDomain <$1> <?> <$1>
R<RELAY> $*		$@ RELAY
R<$*> <$*>		$: $2

# check IP address
R$*			$: $&{client_addr}
R$@			$@ OK			originated locally
R0			$@ OK			originated locally
R$=R $*			$@ OK			relayable IP address
R$*			$: $>LookUpAddress <$1> <?> <$1>
R<RELAY> $* 		$@ RELAY		relayable IP address
R<$*> <$*>		$: $2
R$*			$: [ $1 ]		put brackets around it...
R$=w			$@ OK			... and see if it is local


# anything else is bogus
R$*			$#error $@ 5.7.1 $: "550 Relaying denied"

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


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

#####  @(#)local.m4	8.30 (Berkeley) 6/30/1998  #####

Mlocal,		P=/usr/libexec/mail.local, F=lsDFMAw5:/|@qSXfmnz9P, S=10/30, R=20/40,
		T=DNS/RFC822/X-Unix,
		A=mail.local -l
Mprog,		P=/bin/sh, F=lsDFMoqeu9, S=10/30, R=20/40, D=$z:/,
		T=X-Unix,
		A=sh -c $u
Mbbsmail,	P=/home/bbs/bin/bbsmail, F=lsSDFMuhP, S=10, R=20,
		A=bbsmail -d $u

#
#  Envelope sender rewriting
#
S10
R<@>			$n			errors to mailer-daemon
R@ <@ $*>		$n			temporarily bypass Sun bogosity
R$+			$: $>50 $1		add local domain if needed
R$*			$: $>94 $1		do masquerading

#
#  Envelope recipient rewriting
#
S20
R$+ < @ $* >		$: $1			strip host part

#
#  Header sender rewriting
#
S30
R<@>			$n			errors to mailer-daemon
R@ <@ $*>		$n			temporarily bypass Sun bogosity
R$+			$: $>50 $1		add local domain if needed
R$*			$: $>93 $1		do masquerading

#
#  Header recipient rewriting
#
S40
R$+			$: $>50 $1		add local domain if needed

#
#  Common code to add local domain name (only if always-add-domain)
#
S50

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

#####  @(#)smtp.m4	8.38 (Berkeley) 5/19/1998  #####

Msmtp,		P=[IPC], F=mDFMuX, S=11/31, R=21, E=\r\n, L=990,
		T=DNS/RFC822/SMTP,
		A=IPC $h
Mesmtp,		P=[IPC], F=mDFMuXa, S=11/31, R=21, E=\r\n, L=990,
		T=DNS/RFC822/SMTP,
		A=IPC $h
Msmtp8,		P=[IPC], F=mDFMuX8, S=11/31, R=21, E=\r\n, L=990,
		T=DNS/RFC822/SMTP,
		A=IPC $h
Mrelay,		P=[IPC], F=mDFMuXa8, S=11/31, R=61, E=\r\n, L=2040,
		T=DNS/RFC822/SMTP,
		A=IPC $h

#
#  envelope sender rewriting
#
S11
R$+			$: $>51 $1			sender/recipient common
R$* :; <@>		$@				list:; special case
R$*			$: $>61 $1			qualify unqual'ed names
R$+			$: $>94 $1			do masquerading


#
#  envelope recipient rewriting --
#  also header recipient if not masquerading recipients
#
S21
R$+			$: $>51 $1			sender/recipient common
R$+			$: $>61 $1			qualify unqual'ed names


#
#  header sender and masquerading header recipient rewriting
#
S31
R$+			$: $>51 $1			sender/recipient common
R:; <@>			$@				list:; special case

# do special header rewriting
R$* <@> $*		$@ $1 <@> $2			pass null host through
R< @ $* > $*		$@ < @ $1 > $2			pass route-addr through
R$*			$: $>61 $1			qualify unqual'ed names
R$+			$: $>93 $1			do masquerading


#
#  convert pseudo-domain addresses to real domain addresses
#
S51

# 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 < @ $3 >			strip mailer: part
R$+ < @ >		$: $1 < @ *LOCAL* >		if no UUCP_RELAY


#
#  common sender and masquerading recipient rewriting
#
S61

R$* < @ $* > $*		$@ $1 < @ $2 > $3		already fully qualified
R$+			$@ $1 < @ *LOCAL* >		add local qualification


#
#  relay mailer header masquerading recipient rewriting
#
S71

R$+			$: $>61 $1
R$+			$: $>93 $1
