Michael:
> It appears the reason that a over-quota notification email is not being
> received by the sender is because according to the logs Postfix is sending
> these with a NULL sender.
Then the RECEIVER mail configuration is broken.
> How do I set the sender for notification emails? say postmas...@site.tld...
The Internet mail standards specify that delivery status notifications
have the null sender address. This is for good reasons, and if
someone disagrees, you are welcome to refer them to the standards.
Wietse
