Post #1475626
2026-04-20 15:26 UTC
This is my absolutely not surprised face that mere moments after I add a secondary MX to one of our zones, various IPs show up to poke its SMTP port, despite our primary MX being up (and the backup MX not actually running a SMTP server right now).
Replies (1)
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@cks@mastodon.social 2026-04-20 15:54
Oops, I have to retract some of my 'the spammers are showing up on schedule' snark, because our primary MX greylists people sometime and if the primary MX is 4xx'ing things, trying the backup MX is reasonable. (But surprise, the backup MX will greylist you too because our MXes are running the same configuration.)