Question Can you limit Email Clients by Ip Addresss ( dovecot imap settings?)

[alexk345]

Server operating system version

alma linus

Plesk version and microupdate number

obsidian

Can you limit Email Clients by Ip Addresss ( dovecot imap settings?)
if people spam our emails with user and pass to connect and spam from outside of our app?

 

[Peter Debik]

This is an easy task for Fail2Ban. Plesk comes with a jail named "Dovecot". Simply activate that jail. It'll monitor the mail log for failed login attempts and ban the IP addresses of the users who send n false logins.