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: "doveconf: Fatal: Error in configuration file /etc/dovecot/dovecot.conf line 7: ssl_cert: /etc/postfix/smtpd.cert Can not open file: Permission denied" Till requested the output from a ls command, here is what I got - bigbang:/etc/postfix # ls -la /etc/postfix/smtpd.cert -rw-r--r-- 1 root root 1424 Jun 16 16:04 /etc/postfix/smtpd.cert I tried doing a chmod 0777 smtpd.cert, just for grins, but no joy. Any ideas?