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[Lilly]

this topic may help if you haven’t seen it yet:

Filter known-bad sender domains from your mail-receiver

If you run your own incoming mail, and you find that you’re getting more abusive mail than you’re willing to tolerate, this guide is for you! It’ll show you how to configure your mail-receiver container to block e-mail from any domain on a list you create, and how you can add and remove domains from that list over time. Setup Using the custom Postfix configuration guide, configure your mail-receiver container to have an /etc/postfix/shared volume (see the “Addendum” section at the bottom). …