On Fri, 25 Sep 2009, jmunjr wrote:
The majority of email coming into my server (Centos5.2, postfix,
dovecot) gets scanned and get the "X-Spam-Status" inserted just fine by
spamassassin 3.2.4 but several get through with no spam header inserted.
Any reasons why?
Message size. How big are the messages that don't get scanned? spamc will
not send messages larger than a configurable maximum size to spamd.
System overload. How heavily loaded is the system doing the scanning -
especially, is it swapping?
Possibly DNS timeouts. Do you have a caching nameserver set up locally,
and is SA configured to use that nameserver?
System tasks, like automatic restart of spamd after running sa_update. If
a message it receiver during the brief window spamd is down, it may be
passed unscanned.
What command-line arguments are being used with spamc?
Check your MTA log (e.g. /var/spool/maillog) for the time around when the
message was received, and for the message's Message-ID. That may yield
some clues about what happened.
--
John Hardin KA7OHZ http://www.impsec.org/~jhardin/
jhar...@impsec.org FALaholic #11174 pgpk -a jhar...@impsec.org
key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79
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