From your first post it sounded like your recipient is external to your domain. Please give more details: 1) Is the problem with outgoing mail from your Exchange to Internet, Incoming mail from Internet to your Exchange ? 2) Is the problem restricted only to this particular sender/recipient? And please do not truncate replies while replying to the post, it helps others follow the thread easier if they want to respond. Regards, Raj -----Original Message----- From: Jennifer [mailto:jenmar@xxxxxxxxxxxxxx] Sent: Wednesday, March 23, 2005 9:56 AM To: [ExchangeList] Subject: [exchangelist] RE: NDR message http://www.MSExchange.org/ This user was not recently created, this user was added a few months ago. the problem only start happening this week. i did not make any policy changes. ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSEXchange.org Discussion List as: raj.periyasamy@xxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to listadmin@xxxxxxxxxxxxxx