Newsflash ;) This has happened in the past where the user was NOT subscribed to the list, in which there's not much I can do. I've already unsubscribed this particular user. I suggest if it annoys you that you block messages from this user so that you don't see them.
this is of course impossible as bounces necessarily have a null sender.
If you can block based on From header, then the address to block is: [EMAIL PROTECTED] (as say below, it is a broken mailserver anyway).
Unfortunately my suggestion of a few posts back, that of using Sender: and Errors-to: headers, was incorrect.
It seems that the MTA at csg.fornby.fhsk.se is the usual piece of junk, as delivery failure reports should be addressed to the envelope sender, and not the From: header argument.
Perhaps as a long term solution we could all block 217.31.174.242 at our firewalls... (don't take this seriously!).
Giuliano
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