I have a lot of login attempts from China, Taiwan, Korea, Russia etc. always following the pattern Username: art, art@domain.tld, arts, arts@domain.tld. In a short time, there are always a lot of requests with completely different IP addresses but all from the countries mentioned. Now I have come up with the idea of blocking something like this with geoip-shell. My machine has Debian 12 as OS and only Mailcow runs on it. Is this a good idea or do you have another suggestion?
EnglishGeoip blocking
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This is a cat and mouse game. Eventually you will block most of the internet…
If you have passwords like “123456” or “Webergrill1” this could be a threat. Otherwise I would simply ignore these entries.
Or you can have a look at this thread:
geoip blocking mailcow community
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