I hate these too. I always get one whenever I send to the list.
I didn't know what they are though.
> could someone remove 'email@example.com' or whatever the
> similar email address is that's subscribed? i'm sick of getting these
> messages from their mail daemon :)
> ----- Forwarded message from Postmaster <Postmaster@tech.biglake.k12.mn.us> -----
> From: "Postmaster" <Postmaster@tech.biglake.k12.mn.us>
> To: <polarize@SOUTHEAST.NET>
> Date: Fri, 17 Apr 1998 14:06:56 -0500
> Subject: Non-Delivery Report
> Could not deliver message (ID=20651).
> Local account 'netadmin' is unknown.
- From: Jeff <polarize@SOUTHEAST.NET>