Cannot receive emails from Gmail only


New Member
Jan 28, 2022

I've recently installed a Proxmox Mail GW that works just "fine"!

Its setup as a mail relay and it receives emails from anyone except

No configuration either from the Firewall behind it or the Proxmox itself is configured to block or even allow

All engines are updated.

All emails are visible in Tracking Center but no where to be found when we send from gmail. No undeliverable to show, no nothing!

Behind this Proxmox is an Anti-spam engine Firewall - Watchguard, but it shouldnt matter since the first receiver is Proxmox itself

Any recommendations?
Last edited:

Stoiko Ivanov

Proxmox Staff Member
Staff member
May 2, 2018
Please share the logs of PMG for such a mail - that should show us if PMG does not pass them on, or if the issue is after PMG

(on a wild guess I could imagine that the anti-spam firewall discards the mail in the assumption, that mail from gmail will come from gmail servers - but you should be able to find hints for this in the anti-spam firewall logs)


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