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Text File | 1996-07-22 | 48KB | 941 lines

######################################################################## # File: sendmail.uml Version 3.0 16-Apr-1995 # # Niel Kempson <kempson@snowyowl.co.uk> # ######################################################################## # # # CHANGE LOG # # # # 1.0 [27-Nov-1994] Niel Kempson <kempson@snowyowl.co.uk> # # Initial release. # # # # 2.0 [05-Feb-1995] Niel Kempson <kempson@snowyowl.co.uk> # # Clarified use of 'Cw' macro and added support for LAMail. # # # # 3.0 [16-Apr-1995] Niel Kempson <snowyowl.co.uk> # # Further clarifications for some bits that evidently weren't # # clear enough :-( # # # ######################################################################## # # # # # Sendmail # # Copyright (c) 1983 Eric P. Allman # # Berkeley, California # # # # Copyright (c) 1983 Regents of the University of California. # # All rights reserved. The Berkeley software License Agreement # # specifies the terms and conditions for redistribution. # # # # This configuration file was modified specifically for IBM's # # SENDMAIL product for the IBM OS/2 Operating System. Please avoid # # making changes to this file, as it will change the operation of # # SENDMAIL. # # # # Modified by: Ed Overly & Daniel Barton @ IBM # # Yorktown, NY Research Triangle Park, NC # # # #----------------------------------------------------------------------# # # # Changes to allow UltiMail/2 Lite to work as an SMTP client rather # # than the usual POP client. You will need to edit this file and # # customise it for your setup. # # # # 1. Use an editor that preserves TAB characters. Do NOT use the # # EPM or TEDIT editors that come with OS/2 - they expand TABs # # into spaces and will cause this file to be useless. The E # # editor is OK. # # # # 2. Search for the string "---EDIT---" in this file and edit the # # following line(s) in accordance with the notes in the adjacent # # comment. There are 10 occurrences of "---EDIT---" after this # # line. PLEASE make sure that you check each of them before # # firing up sendmail. # # # # 3. There are explicit paths specified in this file; the examples # # presented assume that your IAK installation is in the default # # location of C:\TCPIP. If this is not the case, please check # # carefully the paths specified under EDITs 04,05,06,07,10. # # # # 4. For the examples predefined in this file: # # # # o official host name: snowyowl.demon.co.uk # # # # o other aliases: snowyowl.com, snowyowl.co.uk, sos.co.uk # # # # o IBM TCP/IP installed in C:\TCPIP # # # # o all outgoing mail sent to post.demon.co.uk for onward # # routing and delivery # # # # 5. After configuration, this file should be installed as # # <ETC-DIR>\sendmail.uml, where <ETC-DIR> is the TCP/IP ETC # # directory (usually C:\TCPIP\ETC). # # # # 6. UltiMail/2 Lite will use this file automatically, but sendmail # # will need to be told to use it as well. When you start the # # sendmail daemon, be sure to specify the -C option as shown in # # this example: # # # # sendmail -bd -d1.1 -q5m -Cc:\tcpip\etc\sendmail.uml # # # # 7. If you want to use this file with LAMail, ensure that it is # # called X:\tcpip\etc\sendmail.cf (where X: is your TCP/IP disk).# # # ######################################################################## ######################################################################## # # # Host name definition (YOU MUST DEFINE THESE) # # # # The Dw macro defines the "official" host name that will be reported # # on any outgoing mail as part of the "From" address. It can contain # # only one host name, without the domain name appended (i.e. no dots # # allowed). # # # # The Cw class macro defines all of the host names for which we will # # accept incoming mail as destined for this machine. It can contain # # a list of host names, separated by whitespace. The host names must # # not have the domain name appended (i.e. no dots allowed). As a # # minimum, the Cw class must include the "official" host name as # # defined in the Dw macro. # # # # YOU MUST DEFINE Cw OR SENDMAIL WILL NEVER RECOGNISE INCOMING MAIL AS # # "LOCAL" AND WILL BOUNCE IT BACK TO THE SENDER. Normally, the Dw and # # Cw definitions are identical. # # # # Complicated Example: # # # # The full domain name of the host is 'snowyowl.demon.co.uk', so # # define the 'w' macro: # # # # Dwsnowyowl # # # # We also wish to accept mail addressed to 'sos-gate.demon.co.uk', # # so add 'sos-gate' to the minimum essential definition of the 'w' # # class ('Cwsnowyowl'): # # # # Cwsnowyowl sos-gate # # # # Normal Examples: # # # # The full domain name of the host is 'company.com', so define: # # # # Dwcompany # # Cwcompany # # DDcom # # # # The full domain name of the host is 'myhost.cts.com', so define: # # # # Dwmyhost # # Cwmyhost # # DDcts.com # # # # (Remember that Cw MUST be defined, normally to the same as Dw.) # # (DD isn't defined until EDIT--02.) # # # #----------------------------------------------------------------------# # # # NOTE: If you want to support aliases in another domain # # (e.g. snowyowl.com), these are defined later under EDITs # # 08 and 09. # # # # NOTE: You MUST define Cw or sendmail will never recognise # # incoming mail as "local" and will bounce it back to the # # sender. Normally, the Dw and Cw definitions are identical.# # # ######################################################################## #---EDIT---01--- Dwhostname Cwhostname ######################################################################## # # # Local domain name. (DEFINE THIS IF DOMAINS ARE USED) # # **WARNING** # # # # When domain names are used, SMTP transactions utilize the # # full domain (official) name of the host. All host names with # # no domains (abbreviated) are expanded with the local domain # # by the mail service. This is consistent with Internet text standards.# # All hosts sending or RECEIVING mail must recognize their official # # host names. When using domains enter the official host name in # # /etc/hosts and be certain that all network nameservers recognize # # official host names. # # # # Define the D macro to be the whole domain for the local host. # # This configuration file supports four part domains. It can be # # expanded to support n part domains. # # # # Example: # # # # The full domain name of the host is 'snowyowl.demon.co.uk', so # # define the 'D' macro: # # # # DDdemon.co.uk # # # ######################################################################## #---EDIT---02--- DDfull.domain.name ######################################################################## # # # MAIL RELAY HOST # # # # For dialup lines, it is usually desirable to send all outgoing mail # # to a 'local' host (usually belonging to the service provider) as # # quickly as possible and then leave it to worry about delivery to # # remote (and slow) parts of the net. # # # # Define the 'V' macro as the full domain name of the relay host. # # If you don't have a relay host, comment out the DV line below. # # # # Example: # # # # All outgoing mail will be sent to 'post.demon.co.uk' for onward # # delivery, so define the 'V' macro: # # # # DVpost.demon.co.uk # # # # NOTE: Please don't use post.demon.co.uk unless you are a demon # # customer. Use the mail host run by your service provider. # # # ######################################################################## #---EDIT---03--- DVmail.relay.host # my official host name (includes host name and domain name) Dj$w$?D.$D$. ##################################################### # Version Number (YOU MAY CHANGE THIS AS NEEDED)# ##################################################### DZ3.0ars ###################### # Special macros # ###################### # my name DnMAILER-DAEMON # UNIX header format #DlFrom $g $d DlFrom $g $d remote from $s # delimiter (operator) characters Do.:%@!^=/[] # format of a total name Dq$g$?x ($x)$. # SMTP login message De$j Sendmail $v/$Z ready at $b ############### # Options # ############### ######################################################################## # # # LOCATION OF IMPORTANT FILES # # # ######################################################################## #======================================================================= # Location of alias file - use the 'A' option to define the full file # specification of the sendmail alias file. It's conventionally called # \tcpip\etc\aliases on the TCP/IP drive. Sendmail doesn't mind if this # file doesn't exist. # # Example: OAc:\tcpip\etc\aliases #======================================================================= #---EDIT---04--- OAc:\tcpip\etc\aliases #======================================================================= # Location of help file - use the 'H' option to define the full file # specification of the sendmail help file. It's conventionally called # \tcpip\etc\sendmail.hf on the TCP/IP drive. # # Example: OHc:\tcpip\etc\sendmail.hf #======================================================================= #---EDIT---05--- OHc:\tcpip\etc\sendmail.hf #======================================================================= # Directory used to hold files in the outgoing mail queue - use the 'Q' # option to define the queue directory. It's conventionally called # \tcpip\etc\mqueue on the TCP/IP drive. Sendmail will crash if this # directory doesn't exist. # # Example: OQc:\tcpip\etc\mqueue #======================================================================= #---EDIT---06--- OQc:\tcpip\etc\mqueue #======================================================================= # Location of status file - use the 'S' option to define the full file # specification of the sendmail status file. It's conventionally called # \tcpip\etc\sendmail.st on the TCP/IP drive. OS/2 sendmail doesn't # make use of this file so don't worry if you can't find it anywhere. # # Example: OSc:\tcpip\etc\sendmail.st #======================================================================= #---EDIT---07--- OSc:\tcpip\etc\sendmail.st ######################################################################## # # # OTHER SENDMAIL CONFIGURATION OPTIONS # # # ######################################################################## # substitution for space (blank) characters OB. # (don't) connect to "expensive" mailers #Oc # default delivery mode Odbackground # default messages to old style Oo # queue up everything before starting transmission Os #======================================================================= # Time to live in the queue - '7d' means 7 days. #======================================================================= OT7d # load average at which we refuse connections #OX # work recipient factor #Oy # work msg class factor #Oz # work time factor #OZ ######################################################################## # Message precedences # # Note: could use equal weight so we can let relay decide what to do # ######################################################################## Pfirst-class=0 Pspecial-delivery=100 Pbulk=-60 Pjunk=-100 ######################################################################## # Trusted users # ######################################################################## # This parameter is not used by OS/2 Sendmail. Tdaemon ######################################################################## # Format of headers # ######################################################################## # H?P?Return-Path: <$g> HReceived: $?sfrom $s $.by $j ($v/$Z) id $i; $b H?D?Resent-Date: $a H?D?Date: $a H?F?Resent-From: $q H?F?From: $q H?x?Full-Name: $x HSubject: # 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 # # # ######################################################################## ######################################################################## # # # The Complete Specification of Canonical Syntax is: # # # # <ahost> ::= /* ARPA type host name */ # # <uhost> ::= /* UUCP type host name */ # # <user> ::= /* target user name */ # # # # <route_node> ::= @<ahost>: | <uhost>! # # <route_path> ::= <NULL> | <route_node> | <route_path><route_node> # # <target> ::= <user> | <user>@<ahost> # # # # <address> ::= <route_path><target> # # # # This is what we handle, but actually we only look at the minimum # # required to pass the mail on. Intermediaries with other syntax/ # # semantics may be used, provided the addressing is compatible with # # them when the mail arrives there. # # # ######################################################################## ######################################################################## # # # THE DYNAMIC MACROS $f AND $g # # # # Macro $f is defined by the sender address as known the current # # host, via the ruleset sequence: 3, 1, 4. # # # # Macro $g is defined at delivery time for each separate mailer via # # the ruleset sequence: 3, 1, mailer-S, 4. # # # # The SMTP "MAIL FROM" address will be $g. # # # # $g is included in many headers and will be expanded if the header # # is newly created by sendmail. # # # ######################################################################## ######################################################################## # # # THE SMTP INTERFACE # # # # The SMTP "MAIL FROM" address will be $g. # # # # The SMTP "RCPT TO" addresses will be computed from the recipient # # addresses in sendmail by applying the same ruleset sequence as for # # "to" headers: namely, rulesets 3, 2, mailer-R, 4 # # # ######################################################################## ######################################################################## # # # S1: Sender Field Pre-rewriting # # # # This ruleset is used when defining the $f macro. In this case it # # is applied after S3 and before S4. # # # # This ruleset is applied to all sender type headers after S3 and # # before the mailer specific sender (S) rewrite rules. # # This ruleset is also applied to $f to create $g. # # # ######################################################################## S1 ######################################################################## # # # S2: Recipient Field Pre-rewriting # # # # This ruleset is applied to the user part of the 3-tuple output from # # S0. It is followed by application of the mailer specific recipient # # [R] rewrite rules. # # # # This ruleset is applied to all recipient type headers after S3 and # # before the mailer specific recipient (R) rewrite rules. # # This ruleset is likewise used to reform the "to" address for SMTP. # # # ######################################################################## S2 ######################################################################## # # # S4: Final Output Post-rewriting (Return to standard form) # # # # This ruleset is applied to the user part of the 3-tuple produced # # from ruleset 0. It is applied after the mailer specific recipient # # [R] rules. # # # # This ruleset is applied after S1 when defining the $f macro. # # This ruleset is applied last when creating the $g macro from $f. # # # # This ruleset is applied to all headers after the mailer specific # # rewrite rules (whether recipient or sender) have been applied. # # This ruleset is applied last when computing the RCPT TO address for # # SMTP. # # # ######################################################################## S4 # # Change LOCAL or LOCAL.D to the full domain name. # R$*<@LOCAL>$* $:$1<@$w$?D.$D$.>$2 R$*<@LOCAL.D>$* $:$1<@$w$?D.$D$.>$2 R$*<@$-.LOCAL>$* $:$1<@$2$?D.$D$.>$3 R$*<LOCAL>$* $:$1<$w$?D.$D$.>$2 R$*<LOCAL.D>$* $:$1<$w$?D.$D$.>$2 R$*<$-.LOCAL>$* $:$1<$2$?D.$D$.>$3 # # Remove focus brackets. # R$*<$+>$* $1$2$3 ######################################################################## # # # S3: Address Canonicalization (Internal rewriting form) # # # # This ruleset turns an address in external format into a format # # which simplifies internal rewriting. The inverse ruleset is S4. # # This ruleset is applied first to any external address before other # # rewriting is done. # # # # This concept of canonicalization is to be distinguished from usage # # of the nameserver in the $[/$] construct inside the RHS of rewrite # # rules. This is also sometimes called "canonicalization", but has # # to do not with the syntax of the address but with obtaining the # # correct domain name for the address. # # # # No stripping of local domains is done for route addresses: # # Rulesets which require this must do it themselves by iteratively # # stripping LOCAL or LOCAL.D and recalling this ruleset to # # canonicalize the next host.item. # # # # The term "localization" refers to determining whether the next host # # item is really a reference to the current host. Localization # # assumes that local UUCP host names are in class w. This is not # # strictly a necessary restriction, but it simplifies the network # # concept and also makes for simpler rewrite rules. This ruleset # # replaces explicit instances of local host with the internally # # recognized tag "LOCAL" or "LOCAL.D". # # # # Addresses which do not specify a host name for routing or domain # # will NOT have any reference to the local host appended in any way. # # # ######################################################################## S3 # # Basic textual canonicalization -- note RFC733 heuristic here. # This strips off everything but the innermost list between <>'s. # Some addresses are of the format: Full Name <address> # R$*<$*<$*<$+>$*>$*>$* $4 3-level <> nesting R$*<$*<$+>$*>$* $3 2-level <> nesting R$*<$+>$* $2 basic RFC821/822 parsing # # Turn an "at" token into "@". # # The I macro specifies space or some equivalent char defined by the OI # config option above. # R$+ at $+ $:$1@$2 "at" -> "@" for RFC 822 # Change a%b to a@b. This implies that we support a%b%c... as a route # based address from right to left. # This form of addressing should go away as full domains are supported. # R$+%$- $1@$2 # ====> NOTE <==== # This configuration file always evaluates mix mode addresses from # left to right. No precedence between @ and ! is assumed. The # address a!b@c will resolve to the uucp mailer for the remote host # 'a'. This permits the resolution of very complex route based # addresses such as; @a:@b:c!d!user, a!@b:c!user, a!@b.uucp:user@c. # Return addresses on mail to/from AIX level 4 machines are also # correct. If you wish the address a!b@c to resolve to the TCP # mailer for the remote host 'c' then uncomment the following rewrite # rule. This approach is compatible with older versions of sendmail. # Change a!b@c to @c:a!b #R$-!$-@$+ @$3:$1!$2 # # Change commas to colons for route addresses. # R$+,$+ $1:$2 # # Pick out route addresses. Focus and call localizer. # R@$+:$+ $@$>9<@$1>:$2 handle <route-addr> R$-!$+ $@$>8<$1>!$2 UUCP route # Detect domain!user. Internally convert to user@domain (RFC976). # Rule set 8 will detect local addresses and strip any trailing # periods. R$-.$*!$+ $@$>8<$1.$2>!$3 # # Detect local domain for nonroute addresses. Focus and localize. # R$+@$+ $:$1<@$2> R$+<@$=w.$D> $@$1<@LOCAL.D> R$+<@$=w> $@$1<@LOCAL> R$+<@$=w.UUCP> $@$1<@LOCAL> ############################################################################## # # Treat other addresses as aliases for the local machine. The rules must # be presented in the form: # # R$+<@site.domain>[TAB]$@$1<@LOCAL> # # where [TAB] is a TAB character. # # Example: # # We recognise mail sent to our aliases of 'snowyowl.com', 'snowyowl.co.uk' # and 'sos.co.uk' and treat it as local mail by defining three extra # rules: # # R$+<@snowyowl.com> $@$1<@LOCAL> # R$+<@snowyowl.co.uk> $@$1<@LOCAL> # R$+<@sos.co.uk> $@$1<@LOCAL> # # NOTE: if you don't have a registered domain name for mail that is different # from your official host name (as defined by EDITs 01 & 02), you # don't want these extra rewriting rules. If this is the case, # please leave the three lines under EDIT---08 commented out. # ############################################################################## #---EDIT---08--- #R$+<@full.domain.name> $@$1<@LOCAL> #============================================================================= # Normal addresses in the form "user<@domain.name>" are left untouched, # but this rule is present to catch local addresses (i.e. those not containing # an "@"). #============================================================================= R$+<@$+> $@$1<@$2> # # Anything getting this far is treated as a local name, including simple # names. They will NOT have an appended domain. # This is so the $f macro definition will be the sender address # as known locally. # R$+ $:$1<@LOCAL> # just a user name ######################################################################## # # # S9: Localize ARPA type route path. # # # # This is used only by S3. # # # ######################################################################## S9 R<@$=w.$D>:$* $@<@LOCAL.D>:$2 R<@$=w>:$* $@<@LOCAL>:$2 R<@$=w.UUCP>:$* $@<@LOCAL>:$2 ############################################################################## # # Strip off any of our aliases from the beginning of a routed mail address. # Incoming mail can often be addressed in the form: # # @snowyowl.demon.co.uk:kempson@snowyowl.com # # and its useful to strip off the unnecessary routing hop if the first # one is actually local. # # The rules must be presented in the form: # # R<@host.site.domain>:$*[TAB]$@<@LOCAL>:$1 # # where [TAB] is a TAB character. # # Example: # # We recognise mail sent to our aliases of 'snowyowl.com', 'snowyowl.co.uk' # and 'sos.co.uk' and treat it as local mail by defining three extra # rules: # # R<@snowyowl.com>:$* $@<@LOCAL>:$1 # R<@snowyowl.co.uk>:$* $@<@LOCAL>:$1 # R<@sos.co.uk>:$* $@<@LOCAL>:$1 # # NOTE: if you don't have a registered domain name for mail that is different # from your official host name (as defined by EDITs 01 & 02), you # don't want these extra rewriting rules. If this is the case, # please leave the three lines under EDIT---09 commented out. # ############################################################################## #---EDIT---09--- #R<@full.domain.name>:$* $@<@LOCAL>:$1 ######################################################################## # # # MAILERS # # # ######################################################################## ######################################################################## # # # LOCAL AND PROGRAM MAILER SPECIFICATION # # # # Mail for this host is presented to the "local" mailer for delivery. # # # # # # Local delivery to UltiMail/2 # # ---------------------------- # # # # We want to pass incoming mail to the UMAILER program provided with # # UltiMail/2 Lite - it accepts messages and stores them in # # UltiMail's In-Basket folder. # # # # The 'local' mailer should be defined as: # # # # Mlocal, P=c:\tcpip\umail\umailer.exe, F=lsDFPM, S=10, R=20, # # A=-dest c:\tcpip\umail\server\inbox -to $u # # # # # # Local delivery to LAMail # # ------------------------ # # # # We want to pass such mail to LAMail for delivery to its InBox. # # There is no explicit .exe program used to perform the delivery - # # a DLL provided by LAMail is used instead. An 'Mlocal' definition # # is still needed and it should look like this: # # # # Mlocal, P=c:\tcpip\etc\mail.exe, F=lsDFPM, S=10, R=20, # # A=c:\tcpip\etc\mail $u # # # # Warning: there MUST NOT be a real "c:\tcpip\etc\mail.exe" program, # # or mail will be passed to it instead of the LAMail DLL. # # # # NOTE # # ---- # # The Mlocal definitions must be on one line only - they have been # # wrapped in the examples above to make them more easy to read. # # # # THE Mlocal DEFINITIONS MUST BE ON ONE LINE ONLY - they have been # # wrapped in the examples above to make them more easy to read. # # # ######################################################################## #---EDIT---10--- # # delivery # Mlocal, P=c:\tcpip\bin\rcvmail.exe, F=lsDFPM, S=10, R=20, A=-u c:/tcpip/mail $u # # UltiMail/2 delivery # #Mlocal, P=c:\tcpip\umail\umailer.exe, F=lsDFPM, S=10, R=20, A=-dest c:\tcpip\umail\server\inbox -to $u # #LAMail delivery # #Mlocal, P=c:\tcpip\bin\mail.exe, F=lsDFPM, S=10, R=20, A=c:\tcpip\etc\mail $u Mprog, P=/bin/sh, F=lsDFM, S=10, R=20, A=sh -c $u ######################################################################## # # # S10: Local/Prog Mailers Sender rules # # # ######################################################################## S10 ######################################################################## # # # S20: Local/Prog Mailers Recipient rules # # # ######################################################################## S20 ######################################################################## # # # TCP Mailer Specification # # # ######################################################################## Mtcp, P=[IPC], F=mDFMueXL, S=14, R=24, A=IPC $h ######################################################################## # # # S14: TCP Mailer Sender Rules # # # # This ruleset is applied in the following circumstances: # # # # 1) To process sender type headers. These have header names: # # # # "resent-sender" # # "resent-from" # # "resent-reply-to" # # "sender" # # "from" # # "reply-to" # # "return-receipt-to" # # "errors-to" # # # # 2) To define the $g macro from the $f macro. # # # # In either case, it is applied after ruleset 1, and is followed by # # ruleset 4. # # # # Watch out if one of those headers is newly created and includes the # # expanded $g macro! This ruleset will have been used to create $g, # # and will then be applied to the result of the expansion of $g. # # This ruleset must handle this! # # # # The $g macro is used in many places. # # # ######################################################################## S14 ######################################################################## # # # S24: TCP Mailer Recipient rules # # # # This ruleset is applied in the following cases: # # # # 1) To process recipient type headers being sent out through this # # mailer. These headers are the ones with header names: # # # # "to" # # "resent-to" # # "cc" # # "resent-cc" # # "bcc" # # "resent-bcc" # # # # but NOT: # # # # "Apparently-to" # # # # 2) To process the user part of the 3-tuple from S0 which resolves # # to this mailer. This is the complete "to" address for ordinary # # tcp usage, or is the original UUCP path if we are relaying # # using DU. # # # # 3) To process the "to" address to form the SMTP RCPT TO address. # # # # In all cases, this ruleset is applied after ruleset 2, and is # # followed by ruleset 4. # # # # Remember that this ruleset applies to all "to" type headers in the # # mail transmitted via this mailer. This does not include # # "Apparently-to:" headers. Not all "To:" headers point to the # # current mail target! For instance, if the mail originated on this # # host and some targets were local, there may be local "To:" headers # # that must be processed by this ruleset! The idea here is to make # # sure that the headers will be properly understood in the context of # # the next host to which the mail will go. # # # ######################################################################## S24 # # Leave route based addresses alone. They are already completely # intelligible in any context. # R<$+>$+ $@<$1>$2 # # Fully qualify our host name with full domain. # R$+<@LOCAL> $@$1<@LOCAL.D> # # Fully qualify nonlocal host names in our local domain. # R$+<@$-> $@$1<@$2.LOCAL> # # Leave all other typical domain addresses alone. # R$+<$+> $@$1<$2> # # Append full local domain where none exists at all. This handles the # case of local targets whose (missing) host would cause misunderstanding # in the next host. # R$+ $@$1<@LOCAL.D> ######################################################################## # # # Rule Zero # # # # Resolve sender or recipient address to mailer/host/user 3-tuple. # # This may require iteration in use of S3 to strip leading route # # items which pertain to the current host. # # # # Sendmail will pass the user portion of the 3-tuple through ruleset # # 2 + the mailer specific recipient ruleset + ruleset 4. # # # ######################################################################## S0 # # Handle route addresses that begin with LOCAL or LOCAL.D # R<$*LOCAL$*>$-$+ $>3$4 # Change a%b<$*> to <$*>:a@b. # This form of addressing should go away as full domains are supported. # R$+%$-<$*> <$3>:$1@$2 # # Handle explicit local delivery. # # The entire prefix is treated as local user. R$+<@LOCAL$*> $#local $:$1 # # Canonicalize anything else which has an @focus. This excludes simple # names, which are local. # R$*<@$+>$* $:$1<@$[$2$]>$3 #============================================================================= # Send domain address (including domain literals or IP quads) to the mail # relay defined by macro 'V' for onward delivery. If macro 'V' hasn't been # defined, attempt delivery directly. #============================================================================= R$*<@$+>$* $#tcp $?V $@$V $:$1<@$2>$3 $| $@$2 $:$1<@$2>$3 $. # # Remaining names must be local. # User is whatever is left. # R$+ $#local $:$1