In order to avoid having a server get flagged for sending spam, I'm trying to change the from email field of Webmin notifications, i.e. backups not working, so that it's from a FQDN that actually points to the host. I've done everything necessary in the MTA configuration (Postfix), yet the domain name of notification emails is still the non-FQDN name of the host as it was set in /etc/hosts during the installation of the OS (Ubuntu Server).
The particular host name being used by Webmin is the name associated with 127.0.0.1. Is there a way to get around having Webmin use that hostname without having to edit /etc/hosts? Is there an option buried somewhere in the menus that I've been overlooking?