Just been suffering from an odd SpamAssassin timeout issue. Some mails were taking forever to scan. Timing out (and being allowed thru, as per config). Running them through
spamassassin -D < blah.msg
had them scanned in about 60 secs.
Running with
spamc -c < blah.msg
was timing out after 10 minutes. strace showed the spamc client was never receiving the response from spamd, and running spamd in debug mode I could see the scan finishing after about 1 minute
Anyway, turns out default in Debian is to run the scan over port TCP/IP 783, I found changing it to a UNIX domain socket fixed the issue.
/etc/default/spamassassin OPTIONS="--create-prefs --max-children 4 --helper-home-dir --socketpath=/var/run/spamd.sock"
/etc/exim4/sa-exim.conf SAspamcSockPath: /var/run/spamd.sock #SAspamcHost: 127.0.0.1 #SAspamcPort: 783
That scan now completes in under 60 secs.
