I found this question previously posted by regcom but unfortunately it appears he never got a reply. I am facing the exact same issue so will repost his question. I am running on OpenSuSE Leap 42.3 x64 bit system. I used the tutorial "The Perfect Server - OpenSUSE 13.1 x86_64 (Apache2, MySQL, PHP, Postfix, Dovecot and ISPConfig 3)." Opening the ISPConfig monitor I found that the IMAP and POP3 services are not active. I tried to start dovecot but I get the following error message:
You didn't post your error message. And since I do not see any securing guide for postfix and dovecot in that tutorial, how did you actually setup your smtpd.cert and smtpd.key for them? Are you using a self-signed SSL certs or LE SSL certs?
