emailconfig/lib/rewrite.gateway

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#
# sample rewrite file for systems that send mail to a mail server or gateway
# for delivery. we assume the mail server handles incoming messages.
#
# by default the return address points to this system; set $site
# to the name of the mail server that receives your mail in
# /rc/bin/termrc and /rc/bin/cpurc.
#
# replace YOURDOMAIN.DOM with the name of your domain.
#
# in the last rule, $smtp is the name of the mail server. set it
# in the DNS database in /lib/ndb (see ndb(6)).
# translate local aliases from /mail/lib/namefiles
\"(.+)\" translate "/bin/upas/aliasmail '\1'"
[^!@.]+ translate "/bin/upas/aliasmail '&'"
# append the local domain to addresses without a domain
local!"(.+)" alias \1@YOURDOMAIN.DOM
local!(.*) alias \1@YOURDOMAIN.DOM
# convert source domain address to a chain a@b@c@d...
@([^@!,]*):([^!@]*)@([^!]*) alias \2@\3@\1
@([^@!]*),@([^!@,]*):([^!@]*)@([^!]*) alias @\1:\3@\4@\2
# convert a chain a@b@c@d... to ...d!c!b!a
([^@]+)@([^@]+)@(.+) alias \2!\1@\3
([^@]+)@([^@]+) alias \2!\1
# send all mail to the gateway or mail server, $smtp, for delivery
([^!]*)!(.*) | "/mail/lib/qmail '\s' 'net!$smtp'" "'\2@\1'"