tls_server_cert: /etc/ssl/private/cyrus.crt
tls_server_key: /etc/ssl/private/cyrus.key
tls_client_ca_file: /etc/ssl/private/intermediate.pem
tls_ciphers: EECDH+AESGCM:EDH+AESGCM
tls_versions: tls1_2