Gary Smith a écrit : >> Is there some reason the Message-ID won't work as a unique >> identifier? >> > > It's about compliance tracking and tagging for specific things. > >> You can use a policy server to insert a header based on >> envelope information. >> http://www.postfix.org/SMTPD_POLICY_README.html >> >> If your header must be based on the message content, you'll >> need a milter or content_filter. >> > > Indeed. We are hooking into the content_filter as we speak. We do some > analytics on the email message and need to append and track content specific > hit ratios for specific messages. Basically, think of putting a spam score > into a message, but instead of checking for spam, we are checking to see if > the incoming message violates specific guidelines. I know it might sound a > little trivial as we could just as easily develop some type of database, but > since all out email already goes to a compliance archive, we want to keep > intact what the hit ratio was for that specific message based upon that point > in time without having to worry about keeping some type of mapping in place. > (that's the slightly longer reason).
if you're using amavisd-new, then you can write custom code for amavisd-new. if not, you can write a spamassassin plugin. if you want it in shell, then prepend the header, but make sure it is "valid" (no special characters, ...).
