vim-mac gives me an error

Lately, everytime I mail the list "vim-mac-eAwD1DtX1Q8@xxxxxxxxxxxxxxxx", I'm 
being send an
"Invalid Email Address at AET"

Quoting the mail here:

X-Auto: webmaster-ejQy8aU/RJtt1OO0OYaSVA@xxxxxxxxxxxxxxxx
X-Loop-Detect: 1
To: panos.laganakos-Re5JQEeQqe8AvxtiuMwx3w@xxxxxxxxxxxxxxxx
From: webmaster-ejQy8aU/RJtt1OO0OYaSVA@xxxxxxxxxxxxxxxx
Reply-To: devnull-ejQy8aU/RJtt1OO0OYaSVA@xxxxxxxxxxxxxxxx
Original-Recipient: rfc822;kplayer9-ejQy8aU/RJtt1OO0OYaSVA@xxxxxxxxxxxxxxxx
Final-Recipient: rfc822;webmaster-ejQy8aU/RJtt1OO0OYaSVA@xxxxxxxxxxxxxxxx



The email address that your are trying to contact no longer exists or
due to spam we no longer will receive this email, Please contact
Advanced Engineering Technologies for more inforamtion
www.advancedet.com


Any ideas what's happening here?

--
Panos Laganakos