emailconfig/lib/rewrite.direct

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#
# sample rewrite file for systems that send and receive mail directly.
#
# by default, the return address points to this system; if you have multiple systems
# and don't want them all to be mail recipients, set $site to a generic
# name (e.g., plan9) or system name in /rc/bin/termrc and /rc/bin/cpurc
# and put an MX DNS record in /lib/ndb to point to that system.
#
# replace YOURDOMAIN.DOM in the following rules with your domain name.
# translate local aliases from /mail/lib/namefiles
\"(.+)\" translate "/bin/upas/aliasmail '\1'"
[^!@.]+ translate "/bin/upas/aliasmail '&'"
# your local names
\l!(.*) alias \1
\l\.YOURDOMAIN\.DOM!(.*) alias \1
# deliver mail without a domain locally
local!"(.+)" >> /mail/box/\1/mbox
local!(.*) >> /mail/box/\1/mbox
# 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
# queue all mail for delivery
([^!]*)!(.*) | "/mail/lib/qmail '\s' 'net!\1'" "'\2'"