usr.sbin/sendmail/cf/m4/nstcpm.m4

divert(10)
#
#  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.
#
#       @(#)nstcpm.m4   1.21 (Berkeley) 1/3/89
#
divert(0)
############################################################
############################################################
#####
#####           Internet SMTP Mailer specification
#####
#####   Messages processed by this specification are assumed to leave
#####   the local domain -- hence, they must be canonical according to
#####   RFC822 etc.  This means that machines not registered with
#####   the NIC must be hidden behind our Internet relay.
#####
############################################################
############################################################

Mtcp,   P=[IPC], F=mDFMueXLC, S=14, R=24, A=IPC $h, E=\r\n

S14

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

# map colons to dots everywhere
R$*:$*                  $1.$2                           map colons to dots

# output local host in user@host.domain syntax
R$-                     $1<@$w>                         user w/o host
R$+<@$=w>               $:$1<@$w>                       this host
R$+<@$->                $:$1<@$[$2$]>                   canonicalize into dom
R$+<@$->                $:$1<@$2.$D>                    if nameserver fails
R$+<@$=N.$D>            $@$1<@$2.$D>                    nic-reg hosts are ok
R$+<@$*.$D>             $@$1%$2.$D<@$A>                 else -> u%h@gateway

# if not local, and not a "fake" domain, ask the nameserver
R$+<@$+.$~I>            $@$1<@$[$2.$3$]>                user@host.domain
R$+<@[$+]>              $@$1<@[$2]>                     already ok

# output internal ("fake") domains as "user%host@relay"

ifdef(`BITNET_RELAY',
R$+<@$+.BITNET>         $@$1%$2.BITNET<@$B>             user@host.BITNET)
ifdef(`CSNET_RELAY',
R$+<@$+.CSNET>          $@$1%$2.CSNET<@$C>              user@host.CSNET)
R$+<@$+.UUCP>           $@$2!$1<@$w>                    user@host.UUCP


S24

# put in <> kludge
R$*<$*>$*               $1$2$3                          defocus
R$*                     $:$>3$1                         now canonical form

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

# map colons to dots everywhere.....
R$*:$*                  $1.$2                           map colons to dots

# output local host in user@host.domain syntax
R$-                     $1<@$w>                         user w/o host
R$+<@$=w>               $:$1<@$w>                       this host
R$+<@$->                $:$1<@$[$2$]>                   canonicalize into dom
R$+<@$->                $:$1<@$2.$D>                    if nameserver fails
R$+<@$=N.$D>            $@$1<@$2.$D>                    nic-reg hosts are ok
R$+<@$*.$D>             $@$1%$2.$D<@$A>                 else -> u%h@gateway

# if not local, and not a "fake" domain, ask the nameserver
R$+<@$+.$~I>            $@$1<@$[$2.$3$]>                user@host.domain
R$+<@[$+]>              $@$1<@[$2]>                     already ok

# Hide fake domains behind relays

ifdef(`BITNET_RELAY',
R$+<@$+.BITNET>         $@$1%$2.BITNET<@$B>             user@host.BITNET)
ifdef(`CSNET_RELAY',
R$+<@$+.CSNET>          $@$1%$2.CSNET<@$C>              user@host.CSNET)
R$+<@$+.UUCP>           $@$2!$1                         user@host.UUCP