Hi Ali, check the source in options of the message, check it in smtp logs and in message tracking in Tools. If it is a spam you may block its ip address. @adsi.dat does not exist. Zoran -----Original Message----- From: ali ahamed [mailto:saliahamed@xxxxxxxxxxx] Sent: Fri 7/9/2004 9:56 AM To: [ExchangeList] Cc: Subject: [exchangelist] getting undeliverable msgs to:fb92fd3bd37ca648b872a8adf6387741@xxxxxxxx http://www.MSExchange.org/ Hi All, We're on SBS2000 with Exch2000 installed.Since Two Weeks I'm Getting NDR's with error code 5.4.0 saying that Your message did not reach some or all of the intended recipients--fb92fd3bd37ca648b872a8adf6387741@xxxxxxxx on 7/9/2004 1:31 PM The destination server for this recipient could not be found in Domain Name Service (DNS). Please verify the email address and retry. If that fails, contact your administrator. Can Anybody help me to solve out this problem. Tanhks and Regards, Ahamed ________________________________________________________________________ Yahoo! India Careers: Over 50,000 jobs online Go to: http://yahoo.naukri.com/ ------------------------------------------------------ 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: zmarjanovic@xxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist