How to set up postfix logs?

Question

linux

Hello Lord!
Urgently need help!
Please tell me how to set up postfix logging so that in case
of [code]postfix/smtpd[10202]: warning: unknown[192.168.11.6]: SASL login authentication failed: UGFzc3dvcmQ6[/code]
login is shown, it is very desirable and password. The top of bliss, which would be shown in the form decoded from Base64.
Thanks in advance!!!

Answer 1

install fail2ban, enable processing of postfix logs there and let it ban pickers ;) It doesn't matter what login ;)

Answer 2

fail2ban is certainly a solution, but I would like to know whose accounts are causing unhealthy interest.
The question also popped up...
I have a server with postfix + dovecot + etc... It is located on the local network and, accordingly, has an IP from the local range (192.168.1.5). On the router, the necessary ports are forwarded to 192.168.1.5.
A lot of differences are configured for the mail server: reverse zone, SPF, DKIM & etc. Like, live and rejoice, but no.
Often emails end up in spam. For example, on mail.ru
At the same time, I have repeatedly tested with different services and they assure that letters from my server are extremely reliable.
Alas. This does not prevent them from getting into spam!
Tell me, please, in which direction to dig and to what depth?