I have been experiencing some email issues, yesterday I reinstalled Cyberpanel and configured emails, I was able to send and receive emails from Wordpress, Outlook and Rainloop, the email-tester result was 10/10.
Today the issue has returned, I can not connect to mailserver using outlook, also Rainloop returns "Can't connect to server".
I have tried restarting postfix "sudo service postfix restart" however the issue remains.
This has been an ongoing daily occurring issue for me, I don't want to try reissuing SSL as I have been doing so previously because I found the SSL limit gets reached and then I am screwed.
This is my first VPS so I could be missing something very obvious, any help would be very much appreciated.
Thank you :)