PROBLEM
I want to run IMAP on another port.

ENVIRONMENT

• On-Premise Server + WebMail Installations: Version 6.0 > Current Version

CAUSE
IMAP configuration requirement.

RESOLUTION

To run Dovecot on another port, just do the following:

1. Open up /usr/local/atmail/mailserver/etc/dovecot.conf.
2. Find:
   

   protocol imap {
   #
   mail_plugins = quota imap_quota
   #
   #  mail_executable = /usr/local/atmail/mailserver/etc/create-imap.sh
   #
   }

3. Change to:
   

   protocol imap {
   #
   mail_plugins = quota imap_quota
   #
   #  mail_executable = /usr/local/atmail/mailserver/etc/create-imap.sh
   #
   listen = *:143 *:144
    
   }

   Where 144 is your additional port.
4. Restart Atmail.
   

   % /etc/init.d/atmailserver restart