[Rspamd-Users] How can I explore, why my server IP has been blocked by fuzzy.rspamd

[Marcel Menzel]

Hi,

I am seeing the same problem here, and I am circumventing it by source 
NAT-ing the connection from my MX to the public fuzzy servers to a 
different IP which is in a whole other ASN, so I believe it is not due 
to my query volume, as it'd then get just rate limited on the new IP as 
well.

The blocks also started to happen a few months ago (I can't pinpoint 
exactly when) while my MX hasn't really increased in mail volume.
It's not 100% of the time, sometimes requests still made it through with 
the old IP, with the NAT none of the requests are getting blocked (since 
at least one month).

I am aware of certain ASN or at least subnet blocks on the public fuzzy 
feeds (it's also what Vsevolod said in the Telegram group) because of 
abusive traffic volume, so my guess is that there's some sort rate 
limiting not only per IP but also per /24 or so.

Maybe you're not alone in your subnet?


- Marcel
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