Deal with aliases correctly with no mailboxes dir

See merge request !239

(cherry picked from commit 1269d3df)

039436c5 Deal with aliases correctly with no mailboxes dir

Bullseye testing -> stable

* Update to fix MOTD not displaying in some situations, improve MOTD information and reduce load
* Improved serial/VGA banner
* Various fixes to Exim configuration for changes in Bullseye
* Cleanup of replacement of Webalizer with AWFFull
* Fixes bug with mailbox password daemon not working on IPv6-only #315

See merge request !235

Bullseye testing -> stable

See merge request !231

Update CI testing for Bullseye

See merge request !230

Bullseye unstable -> testing

See merge request !222

Fix for issue #310

See merge request !220

Update mail/exim4/sympl.d/10-acl/50-acl-check-rcpt/80-enable-antispam-check, mail/exim4/sympl.d/10-acl/50-acl-check-rcpt/85-enable-antivirus-check files

Go build does things with $HOME, and fails if $HOME isn't writable, so cheat and define HOME to be where we currently are

Bullseye unstable --> testing

See merge request !215

Update webmail/debian/changelog, web/debian/changelog, updater/debian/changelog, phpmyadmin/debian/changelog, mysql/debian/changelog, monit/debian/changelog, mail/debian/changelog, ftp/debian/changelog, firewall/debian/changelog, dns/debian/changelog, cron/debian/changelog, core/debian/changelog, backup/debian/changelog, CHANGELOG, .gitlab-ci.yml files