I also had a strange delivery error last week: This is the Postfix program at host list.msu.edu. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to <postmaster> If you do so, please include this problem report. You can delete your own text from the attached returned message. The Postfix program <[log in to unmask]>: Command died with signal 9: "/usr/local/bin/lsv_amin /home/listserv/spool MSUNAG" -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Al Puzzuoli Sent: Friday, March 13, 2009 1:42 PM To: [log in to unmask] Subject: [MSUNAG] Strange Delivery Error (was, RE: [MSUNAG] Sandboxie) Totally different topic here, but I had to send this message twice. The first time I tried, I got the below. Any idea what this is? I've never seen it before: Your message did not reach some or all of the intended recipients. Subject: RE: [MSUNAG] Sandboxie Sent: 3/13/2009 1:28 PM The following recipient(s) could not be reached: Nag List ([log in to unmask]) on 3/13/2009 1:28 PM This message could not be sent. Try sending the message again later, or contact your network administrator. The client operation failed. Error is [0x80004005-0x0004b9-0x000501].