Centos: 7.2.1511 (Core)
postfix: 2.10.1
This postfix server was designed to run as follows, which it has done for
several months without incident:
Original filter-only:
master.cf:
smtp inet n - n - - smtpd
-o content_filter=filter:dummy
filter unix - n n - 10 pipe
flags=Rq user=filter null_sender=
argv=/var/spool/filter/bin/filter.sh -f ${sender} -- ${recipient}
Now, I'm tasked with also using spamassassin on same host, which works using
following configuration:
Spamassassin-only:
master.cf:
smtp inet n - n - - smtpd
-o content_filter=spamassassin
spamassassin unix - n n - - pipe
user=spamd argv=/usr/bin/spamc -f -e
/usr/sbin/sendmail -oi -f ${sender} ${recipient}
Our problem is using _both_ spamassassin and filter, preferably in that
order.
Google shows me many references to configuring multiple smtp instances
listening to different ports; which all fail because we're using "pipe" on
both filters.
I've also seen a couple references to chaining pipe-based filters by
calling the 2nd directly from the 1st configuration. This has failed for
me, probably due to different "user" and "flags."
How need I configure postfix to first use spamassassin, then use "filter?"
What am I missing?
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