![]() ![]() If you run the SpamAssassin check directly on incoming mail instead of passing the mail separately through a spam router / transport, that would result in an additional attack point on your server, causing your resources to be overloaded faster. The advantage of this structure is that Spamassassin uses quite a few resources. After the spam check, the mail is forwarded to the routers that take care of the delivery. the virtual_router and localuser routers), all incoming mail is first sent via the spam_check router, which uses the antispam transport to have Spamassassin perform the check. If the score is high enough (by default 5.0), the message is considered spam. Each rule adds or removes points in the message’s score. It will check email message against a large set of rules. Require_files = anti_spam_delivery Explanationīy placing the anti_spam router after the routers that cover forwards / out-of-office etc. SpamAssassin is a free, open-source, flexible and powerful spam-fighting tool. Spamassassin adds all scores and when it reaches a preset value, the mail is blocked as spam.Ĭonnect to your VPS via SSH or the VPS console in the TransIP control panel.Ĭondition = $ ![]() Using its rule base, it uses a wide range of heuristic tests on mail headers and body text to identify spam'', also known as unsolicited commercial email. The score is higher if the specific characteristic often reoccurs in spam. SpamAssassin is a mail filter to identify spam using text analysis and several internet-based realtime blacklists. Spamassassin rules are tuned with a target score of 5 to be considered spam, it seems you must have played around with the tag levels in your spamfilter policies and didnt realize what you were doing. If Spamassassin sees these types of characteristics, it gives a score for that characteristic. SpamAssassin is a widely used open-source software developed by the Apache Foundation. An invalid or missing DKIM record (more and more parties are automatically blocking mail as spam if they don't have DKIM, see also this tutorial).A subject of the mail that consists of capital letters.A small amount of text in relation to the number of images in a mail.Spamassassin scans mail for elements it recognizes as possible characteristics of spam, such as: Execute the commands in this article using sudo, or as a root user.We assume your Exim configuration is stored in a single file.In this tutorial, we explain how to set up Exim and Dovecot. The steps in this article require a VPS with Ubuntu or Debian which has Exim and Dovecot installed.
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