Hello
I followed that article and it worked. All emails are being delivered now. Sending and receiving is working.
Thank you!
Will this problem happen again soon?
Hello
All of sudden no email is being delivered or sent via my server. All emails are in the queue as deferred.
Error is 4.3.2 deferred (host 127.0.0.1[127.0.0.1] said: 421 4.3.2 Service shutting down, closing channel (in reply to RCPT TO command))
I have installed Plesk Email Security (paid...