Set correct sender address for postmaster mails

[mletzgus]

This seems to be the same problem:

Notification sender is not working

Used Zammad version: 5.1.1-11 Used Zammad installation type: docker-compose Expected behavior: Oversize email notification are sent by the address configured in the notification sender #{config.product_name} <noreply@mydomain.com> Actual behavior: Oversize email notification are sent by what seems to be a random address taken from those I configured in the google account

So: From which group is this notifictaion sent? Maybe it’s the group which is undefined - not the mail address?