Fix systemd unknown mail sender, refs #33490

ansible/roles/mediavault/defaults/main.yml

@@ -12,7 +12,7 @@ mv_script_path: /usr/local/sbin/rsync_tmbackup
 
 mv_mailer_enabled: true
 mv_mailer_script_path: /usr/local/sbin/systemd-mailer
-mv_mailer_from: backup <backup@{{ ansible_fqdn }}>
+mv_mailer_from: "{{ ansible_fqdn }} <backup@{{ ansible_fqdn }}>"
 mv_mailer_to: sysadmin+backup@ubicast.eu
 mv_mailer_service_name: status-email-admin
 mv_mailer_service_path: /etc/systemd/system/{{ mv_mailer_service_name }}@.service

ansible/roles/mediavault/templates/systemd-mailer-script.j2

@@ -3,7 +3,7 @@
 sendmail -t <<ERRMAIL
 To: $1
 From: {{ mv_mailer_from }}
-Subject: $2
+Subject: ({{ ansible_fqdn }}) $2 status
 Content-Transfer-Encoding: 8bit
 Content-Type: text/plain; charset=UTF-8