Spam getting VERY low scores

Peter H. Lemieux mailscanner at
Mon Oct 2 15:42:23 UTC 2017

SA's Bayes engine put this meessage into the wrong category:

 > -5.00BAYES_05Bayes spam probability is 1 to 5%

so it appears your SA Bayesian database is screwed up.  Did you train 
the database with known spam and non-spam beforehand?  Did you use 
actual mail for the domain(s) you manage?

Here's a starting suggestion.  Turn of Bayes in SpamAssassin by setting

use_bayes = 0

in /etc/mail/spamassassin/  If that helps with correctly 
classifying spam, then I'd delete the Bayes databases and rebuild them 
with new bodies of spam and non-spam messages.


On 10/02/2017 11:02 AM, Quintin S. Giesbrecht wrote:
> Here are the headers, spam report, and body of 1 of the emails in question:

> Spam report:
> -5.00BAYES_05Bayes spam probability is 1 to 5%
> 2.10FREEMAIL_FORGED_REPLYTOFreemail in Reply-To, but not From
> 0.25FREEMAIL_REPLYTO_END_DIGITReply-To freemail username ends in digit
> 0.50MISSING_MIDMissing Message-Id: header

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