mailop--- via mailop skrev den 2025-03-06 23:27:
I find it amazing that only 24 hours after setting it up on a brand
new ip address at port 587 I am already getting sasl auth brute force
attempts from about 15 different servers.
you know your custommers ?, then reduce ipranges thay can use, all else
is firewalled out
If a tool like this already exists, could someone point me at it. I'm
planning to open source this after a few more refinements.
fail2ban with abuseipdb reporting works for me
customm filter for postscreen, and other type of bot activited missing
in fail2ban
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