Hello,
I am new to plesk and having this issue. I have searched and havent really found a solution for it.
This is the code blocks in question
Dec 5 22:30:11 vps postfix/smtpd[16128]: connect from unknown[unknown]
Dec 5 22:30:11 vps postfix/smtpd[16128]: NOQUEUE: milter-reject: CONNECT from...