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1

When you move message, then dovecot invoke the sa-learn with dovecot's UID, so sa-learn hasn't enough permissions to update bayesian databases. You have to add dovecot's user to the spamd group and ensure you have the next line bayes_file_mode 0660 in the etc/spamassassin/local.cf file. Also you have to verify is bayes databases already have permissions ...


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I have recently upgraded the mail server to a new CentOS 7 server (from CentOS 6) that is doing nothing but email and DNS. The previous CentOS 6 server was also running several websites on Apache. I'm not sure what I'm doing differently that is causing bayes to show up in the Mail Headers as a test that was run, but it appears I have Bayes fully configured. ...


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Here is the email journey across postfix daemon before you put spamassassin stuff Email for a@example.com -> aliased to a@example.com and b@example.com -> final destination After you put spamassassin stuff, basically you put content filter in postfix stack, thus the email journey becomes Email for a@example.com -> aliased to a@example.com and ...


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To change smtpd banner you should set the "$smtpd_greeting_banner" variable. $smtpd_greeting_banner = 'host.example.com ESMTP';


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Disabling ipv6 on centos 6.5 seems to have removed this issues.


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I've used the next approach: MTA is the exim that pass the copy of message to the spamassassin from the DATA ACL. SA returns the score and do not perform any message modifications or routing. If calculated score is above the threshold, exim add some special header (X-Spam-Detected: YES) to the message. Then message is routed for local delivery via ...


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As per comment in this serverfault post and here: local_domains_acl is not correctly set. These headers are only inserted for recipients matching local_domains_acl lookup (or %local_domains or $local_domains_re or field 'local' in SQL lookups); I had mail.mydomain.com and not mydomain.com. Upon changing it to mydomain.com I get the Spam-X headers ...



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