Adding/Changing the SSL cert for mail in plesk – Linux

August 21st, 2013 by admin Leave a reply »

The certificate for SMTP over SSL is located in the following files:

1. For QMail MTA: /var/qmail/control/servercert.pem
2. For Postfix MTA: /etc/postfix/postfix_default.pem

Note: Only QMail MTA is used in Parallels Plesk Panel version 8.x and earlier versions. Use instructions from this KB to define which MTA is used in Parallels Plesk Panel version 9.x and later versions.

For IMAP4 and POP3 over SSL, the following certificate files are used:


By default, these are self-signed certificates for “plesk” which are generated during Parallels Plesk installation. If you need to set up your own certificates, copy and paste your certificate and Private Key into the appropriate filesĀ and restart “qmail/postfix” and “courier-imap” services:

For version 8.6 and earlier versions:

~# /etc/init.d/xinetd restart
~# /etc/init.d/courier-imap restart

For version 9.x and later versions:

~# /usr/local/psa/admin/sbin/mailmng –restart-service

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