Install a certificate for cyrus imapd

To install your certificate, complete your configuration file /etc/imapd.conf with:

tls_cert_file: /loc/ation/to/cert-0000000000-1234.cer
tls_key_file: /loc/ation/to/www.virtualhost.com.key
tls_ca_file: /loc/ation/to/chain-0000000000-1234.txt

The first file (.cer) is the file named A in the delivery e-mail. It contains the X509 certificate.

Le second file (.key) is your private key, the one you created along with your CSR.

The third one is optional. Use it if we indicated a B file in the delivery e-mail. It is the certification chain.

Finally, activate the process in the file/etc/cyrus.conf:

imaps         cmd="/usr/local/bin/imapd -s" listen="imaps" prefork=5 maxchild=200