Changes

*Change directories and run the configuration script for SquirrelMail

cd /usr/share/squirrelmail/config

*Use the menu to select #2 - Server Settings. Edit #1 Domain - choosing your domain name, and #3 Selecting SMTP. Ensure you have saved the data then return to the main menu. From the main menu select option D - Set pre-defined settings for specific IMAP servers, then enter 'dovecot'.

*From the main menu select '1. Organization Preferences', then select option #1 'Organization Name' and change this to your domain name.