I am getting annoying mail spam to non-existent addresses at my site. It of course fails, but it clogs up the logs. Since I don’t have the source IP addresses, is there any way I can block email by source address? I know they keep jumping around, but I am looking for suggestions. My Discourse is sel…

this topic may help if you haven’t seen it yet: [image] Filter known-bad sender domains from your mail-receiver Sysadmins 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 y…

[image] Andrew Bernard: Since I don’t have the source IP addresses You can filter most spammer IP addresses from the logs using this command (it’s not strictly a RFC requirement, but almost all spam relays don’t have a valid PTR) ./launcher logs mail-receiver | grep -v 'unknown' | grep -E 'N…

[image] Andrew Bernard: it clogs up the logs That sounds like a minor administrative inconvenience - compare it to the impact of a less-than-perfect block preventing a real person from making a real contribution to your forum. Personally, I wouldn’t use any kind of blocking, because I never …

How to block mail spammers

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Lilly August 6, 2023, 4:04am 2

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How to block mail spammers

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