Tomasz Chmielewski wrote:
Victor Duchovni wrote:
Anyone there adding custom headers in Postfix?
Use smtp_header_checks, defined in master.cf on the "smtp" service.
Requires postfix 2.5 or newer.
http://www.postfix.org/postconf.5.html#smtp_header_checks
# master.cf
smtp unix - - n - - smtp
-o smtp_header_checks=regexp:/path/add_my_header
# add_my_header
/^/ PREPEND X-Custom: my header
This will prepent the custom header above *each* header of the
message. One needs to match a header that is present exactly once in
each outbound message. Perhaps a locally added "Received" header or
something else added on input.
Would such logic be possible then (not sure how Postfix syntax would
look like here, or if it's possible at all)?
if !(^X-Custom: header)
PREPEND X-Custom: header
fi
This would make adding this header independent of everything else (and
thus, be able to be replicated to other setups without any change).
If you mean, "add the custom header if it's not there
already", then no, that's not possible.
Have your regexp match some header added by your server as
Viktor suggested. A Received: or maybe Message-id: might be a
good choice.
-- Noel Jones
