Re: OT: IMAP under attack

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On 1/8/22 07:03, Andrea Venturoli wrote:
So is it possible to tell Cyrus to throttle reponse?
I.e. fail fast at the first failed login, take 2 seconds for the second, 5 for the third, etc... Keeping in mind that fail2ban will block them anyway at the fifth attempt, but this would slow down them further.

Yes, it is possible.  Take a look at imapd.conf(5) for details.  You should be interested in the 'failedloginpause' setting, which defaults to 3 seconds.

Cheers,
    -nic

--
Nic Bernstein                               nic@xxxxxxxxxxxxxxxx
https://www.nicbernstein.com
https://www.linkedin.com/in/nic-b-26577a178/


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