Am 17.02.2015 um 20:38 schrieb ricky gutierrez:
this solution looks cool , I was thinking of putting another server with a specific account and through transport map from the gw send e-mail server to another server with a specific account.I was looking for how to handle this with postfix
where the ccount lives don't matterthe only resticiton is that "header_checks" BCC in Postfix 3.0 only works for "header_checks" and *not* "smtp_header_checks", hence it need to be defined on the downstream server instead on the MX
where the target address itself is located don't matter, postfix just generates a BCC and sends it to that local or remote address
but be sure you consider the legal implications!
2015-02-17 13:14 GMT-06:00 Reindl Harald <h.rei...@thelounge.net>:Am 17.02.2015 um 20:03 schrieb ricky gutierrez:Hi , I have mounted one gateway filtering me all spam in the business, I have to postfix + centos6.6 + amavisd-new 2.8 + clamav + spamassassin, currently captures 65% of spam the other 35 gets through, I want to improve the effectiveness making a Bayesian db. I am not an expert in postfix and spamassassin, I was thinking to leave a copy of all messages for the domain and classify emails as spam and ham, and then build the db, the problem is that postfix is only a gateway and leaves no emails locally! , someone has faced this type of situation?update to Postfix 3.0 and use the new BCC feature for header_checks on the *downstream servers* to use that as training data *but* be sure you place a sieve rule there to discard all the BCC's to users without a explicit opt-in for *legal* reasons! and protect that BCC account from receive mails on the MX! _________________________________________________ the sieve rule just lists the subscribed Users in the To/Cc-Header with 'keep' and the elseif 'discard' if you want to optimize that add your own enevlope-headers on the MX which covers also BCC and can be used by the sieve-rules instead From/Cc http://comments.gmane.org/gmane.mail.postfix.user/193456 _________________________________________________ main.cf: header_checks = pcre:/etc/postfix/header_checks_smtpd.cf nested_header_checks = mime_header_checks = /etc/postfix/header_checks_smtpd.cf: /^X\-Spam\-Flag: Yes/ BCC spamfil...@thelounge.net /^X\-Spam\-Report: Flag: No.*(BAYES_80|BAYES_95|BAYES_99)/ BCC spamfil...@thelounge.net /^X\-Spam\-Report: Flag: No.*(BAYES_50)/ BCC spamfilter+inbox...@thelounge.net Spamassassin local.cf: clear_headers fold_headers 1 add_header spam Flag _YESNO_ add_header all Status _YESNO_, score=_SCORE_, tag-level=_REQD_, block-level=8.0 report_safe 0 add_header all Report Flag: _YESNO_, _REPORT_ rewrite_header Subject [SPAM]
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