I’ve been busy for a few months and had gotten behind on updates. Fully updated a couple of my Debian 9 machines’ operating systems and Virtualmin/Webmin GPL files a few days ago.
I notice on the Virtualmin dashboard/system info page that the System hostname now only shows the actual hostname whereas it used to show the fqdn.
This seems to have manifested itself as an issue when sending the completion email following a scheduled backup. The email is now generating a sender as <root@foo.> rather than <firstname.lastname@example.org> as before the upgrade to 1.940. Needless to say, the receiving MTA doesn’t like the change much.
At the command line:
# hostname -A
# cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
184.108.40.206 foo.domain.tld foo