I run Postfix, Dovecot, Spamassassin and Amavis/ClamAV. Works like a charm. One day I ran in some problem with backscatter causing my mail server to be listed.

I run Postfix, Dovecot, Spamassassin and Amavis/ClamAV. Works like a charm. One day I ran in some problem with backscatter causing my mail server to be listed. It's good to setup your server to be less prone to this, I wrote a blog post with some configs / tips: https://willem.com/blog/2019-09-10_fighting-backscatter-spam-at-server-level/ https://willem.com/blog/2019-09-10_fighting-backscatter-spam...