On 08/15/05 13:57, Dennis wrote:
Anybody know how to get a filter to work with postfix?
Here is what I want..
main.cf:
header_checks=/etc/postfix/header_checks
header_checks:
/Match Something/ FILTER ??:??
All the documentation I find for the header_checks just says foo:bar
where I put ??:??. I just want to execute a script with the mail as the
input and then have the mail delivered unaltered. So what is foo:bar
supposed to really be? The docs/man pages say it's
transport:destination but I'm having trouble figuring out how to make
transport:destination into path/args for my script.
Any thoughts?
As mentioned in another reply, the setup is the same as for
content_filter. My setup for content_filter is thus:
content_filter = amavisd-new:[127.0.0.1]:10024
amavisd-new is foo, the rest is bar. amavisd-new references an entry in
your master.cf file. Mine, for example, is:
amavisd-new unix - - n - 2 lmtp
-o lmtp_data_done_timeout=1200s
-o disable_dns_lookups=yes
As you can see, postfix passes the message to amavisd-new via LMTP.
Amavisd-new then scans the message (using clamav) and returns clean
messages to a smtpd process listening on port 10025 as started by this
master.cf entry:
127.0.0.1:10025 inet n - n - - smtpd
-o content_filter=
-o local_recipient_maps=
-o relay_recipient_maps=
-o smtpd_restriction_classes=
-o smtpd_client_restrictions=
-o smtpd_helo_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=permit_mynetworks,reject
-o mynetworks=127.0.0.0/8
-o strict_rfc821_envelopes=yes
That smtp process sends the message on to its final destination, be that
locally (though your mail delivery agent (MDA)) or externally.
If you're only concerned about incoming messages, another option you may
want to look into is sending the message to your filter using your MDA,
which is probably procmail or maildrop. They both provide ample
functionality for passing a message to an external filter. I can walk
you through setting up the filter in Maildrop if you like. I'm sure
others here have procmail experience they can contribute.
--Tyler
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