Courier IMAP SSL

Config:

# PROTOCOL
TLS_PROTOCOL="TLS1"
TLS_STARTTLS_PROTOCOL="TLS1"

# chmod 600 imapd.pem
# -----BEGIN CERTIFICATE-----
# -----END CERTIFICATE-----
# -----BEGIN RSA PRIVATE KEY-----
# -----END RSA PRIVATE KEY-----
TLS_CERTFILE=/usr/lib/courier-imap/share/imapd.pem