The return address used by Messaging Gateway (SMG) for non-delivery report (NDR) emails and delivery status notifications (DSN) needs to be changed from the default value of "postmaster".
Messaging Gateway provides a means to update the postmaster email address included in the body of NDR and DSN messages generated by Messaging Gateway via the Control Center's Protocols > Settings page. The default value of "postmaster" results in the following format for NDRs.
Note: this configuration option does not change the email return address for NDRs and DSNs which is hardcoded to "[email protected]".
Example NDR / bounce message generated by SMG:
-------- Message --------
|Subject:||Undelivered Mail Returned to Sender|
|Date:||Wed, 05 Dec 2017 13:19:13 +0000|
|From:||[email protected] (Mail Delivery System)|
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to <postmaster> If you do so, please include this problem report. You can delete your own text from the attached returned message. <[email protected]>: 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown in local recipient table
-------- End of the Message --------
The <postmaster> entry in message body is the field modifiable by Bounce Customization.