I am wondering if CrowdSec is currently covering the “SASL LOGIN authentication failed” scenario. I have read this thread (one year old) New install, postfix / IMAP and it appears that Fail2Ban does but Crowdsec not yet?
In any case, I have the postfix scenarios installed but my log is full of authentication attempts, with individual IPs trying 20 times and more.
What I ended up doing is increasing some of the default values of the scenario.
I can’t look it up for you right now I am afraid, as I am currently not able to log on to this horrible, blinking Discord mess.
Apparently I am logging in from a new location (which I don’t), and by the time the confirmation email arrives the token expired…
Thanks, I appreciate your help! Maybe it is a good idea to tranfer the solution in this place here, where it has the chance to be permanent accessible.
I found only this and another post regarding “postfix-sasl” and this post here provides a solution that unfortunately “disapeared”