Strategies for protecting IMAP (e.g. MFA)

Matthew Richardson matthew-l at
Sun Nov 14 19:26:37 UTC 2021

On Sun, 14 Nov 2021 08:12:53 -0800, Michael Peddemors wrote:-

>And there are RBL's now for know IP(s) used by IMAP hackers, including 
>SpamRats RATS-AUTH that can assist in reducing those attacks.

Looking at the "Example Usage in
Dovecot" says "PLEASE UPDATE".

How would one use a DNSBL like this in Dovecot to reject IMAP connections
from listed IPs?

Best wishes,

More information about the dovecot mailing list