Issue Mail queue undelivered - how to find originating domain

[Daphne]

Server operating system version

CentOS Linux 7.9.2009 (Core)

Plesk version and microupdate number

Plesk Obsidian Version 18.0.63 Update #4, last updated on Sept 4, 2024 03:45 AM

Hi,

The mail-queue shows several email going undelivered.

I know these are coming from a subscription/domain. But there is no information in the mail-queue nor the log browser showing what subscription/domain these originated from.

How do I track this back the the subscription/domain it came from?

Thanks