May 26, 2018

External policy checker for the postfix mail server

Tumgreyspf, an external policy checker for the postfix mail server. It can optionally greylist and/or use spfquery to check SPF records to determine if email should be accepted by your server.

Because of its design, legitimate e-mail is never trapped or rejected. Only spam and viruses are caught. Since adding it to our mail server which also uses Spam Assassin, ClamAV, and an outsourced anti-spam system, our spam level has dropped by an order of magnitude.

It uses the file-system as its database, no additional database is required to use it.

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