Edit File: imaps.xml
<?xml version="1.0" encoding="utf-8"?> <service> <short>IMAP over SSL</short> <description>The Internet Message Access Protocol over SSL (IMAPs) allows a local client to access email on a remote server in a secure way. If you plan to provide a IMAP over SSL service (e.g. with dovecot), enable this option.</description> <port protocol="tcp" port="993"/> </service>