#title Courier POP/IMAP and Essential SSL Certificates #author Stefan Hornburg (Racke) #topics blog; Courier #date 2008-03-16 #pubdate 2008-03-16T16:52:24+01:00 #lang en 1. Concatenate your private key and the certificate issued into a PEM file: cat mail_linuxia_de.key mail_linuxia_de.crt > /etc/courier/imapd.pem 1. Copy the bundle file with the intermediate certifcates into the configuration directory for Courier: cp mail_linuxia_de.ca-bundle /etc/courier 1. Add the location of these files to the IMAP SSL configuration file, e.g. /etc/courier/imapd-ssl: TLS_CERTFILE=/etc/courier/imapd.pem TLS_TRUSTCERTS=/etc/courier/mail_linuxia_de.ca-bundle