How to change default return-path sender (mailer-daemon@hostname) in PMG?

powersupport

Well-Known Member
Jan 18, 2020
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Hi Team,


We are using Proxmox Mail Gateway (PMG).


When emails bounce or fail to send, PMG sends a message from mailer-daemon@<hostname>.
The problem is that this email address is not allowed by our SPF/DMARC settings, so other servers sometimes reject it.


Is there a way to change the sender address for these bounce messages to use a different domain that passes SPF/DMARC?


We looked in the PMG web interface but couldn’t find where to change it.


Thank you!