I have zpanel installed on ubuntu and i have set up iptables as DO instructed. I can send emails but not receive, so i believe it is down to a port not being open in iptables.
Can someone please tell me how to open SMTP, POP3 and IMAP in iptables?
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.