Installing SSL/TLS Certificates for the Courier-IMAP Mail Server¶
To install a custom SSL/TLS certificate for the Courier-IMAP (IMAP/POP3) mail server on a Plesk server:
Log in to a Plesk server through SSH as a root user.
Download one or more SSL/TLS certificate files that you want to install.
Note
IMAP and POP3 each require separate certificate files, but both files can contain the same certificate.
Make a backup copy of the existing default SSL/TLS certificate for the Courier-IMAP mail server.
For example for RedHat or Fedora operating systems, you need to back up the following default SSL/TLS certificate files:
/usr/share/imapd.pem
- the certificate enables secure data transfers through the IMAP protocol./usr/share/pop3d.pem
- the certificate enables secure data transfers through the POP3 protocol.Note
For other operating systems, the default certificate file locations may be different.
Open a default certificate file using your favorite text editor and replace the contents of the file, with the content of the SSL/TLS certificate file that you want to install.
For example, the content to be copied from a custom SSL/TLS certificate and pasted in lieu of a default certificate file body should look like this:
-----BEGIN CERTIFICATE----- MIIB8TCCAZsCBEUpHKkwDQYJKoZIhvcNAQEEBQAwgYExCzAJBgNVBAYTAlJPMQww ............ ............ eNpAIeF34UctLcHkZJGIK6b9Gktm -----END CERTIFICATE----- -----BEGIN RSA PRIVATE KEY----- MIICXgIBAAKBgQDv6i/mxtS2B2PjShArtOAmdRoEcCWa/LH1GcrbW14zdbmIqrxb .......... .......... faXRHcG37TkvglUZ3wgy6eKuyrDi5gkwV8WAuaoNct5j5w== -----END RSA PRIVATE KEY-----
Save and close the file.
To finish the certificate installation, restart Courier-IMAP.