Edit File: imap.xml
<?xml version="1.0" encoding="utf-8"?> <service> <short>IMAP</short> <description>The Internet Message Access Protocol(IMAP) allows a local client to access email on a remote server. If you plan to provide a IMAP service (e.g. with dovecot), enable this option.</description> <port protocol="tcp" port="143"/> </service>