Greetings, Esteban L! > You will need to install fail2ban to ip block failed attempts.
> As you have correctly assumed, a malicious person is trying to hack into you > mail server. > Fail2ban is a required application now and days. That's hardly true. I haven't found a use for fail2ban in last ten years. Anything it could do, there's more direct tools for the same purpose available. I.e. postfix's anvil daemon, for a given use case. -- With best regards, Andrey Repin Thursday, April 4, 2019 22:04:17 Sorry for my terrible english...
