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Article: 1110
From: Rich Graves
Date: 2006-08-23 16:48:51 -0400
Subject: Score for missing Message-Id with milter-spamc

Removal...........: milters-request@milter.info?subject=remove
More information..: http://www.milter.info/#Support
--------------------------------------------------------

Sendmail 8 won't include a locally generated {msg_id} in the headers 
passed to milter-spamc.

Adding this to spamassassin's local.cf restores the +1 score that would 
ordinarily be assigned to such messages. I'm aware that this rule gives 
FP's on qmail-based mailing lists, but the SA team presumably factored 
that risk into the score.

# Same score as default rule MSGID_FROM_MTA_ID, which will never fire
# because milter-spamc does not grab message-id from sendmail ctx
header          MSGID_MISSING      MESSAGEID !~ /./
describe        MSGID_MISSING      No Message-Id header
score           MSGID_MISSING      1.103 0.927 1.183 1.393

Some other milters do the work of checking whether message-id header 
exists and if not, try to grab it from the {msg_id} macro, but this 
seems like a lot of work for little gain. Postfix 2.3 and possible 
future sendmail versions may include locally generated message-ids anyway.

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