Hi All.. I am using Exchange 5.5 SP4 on Windows 2000.. Server was working fine amd smooth untill I installed IMS.. I use to get the NDR for the mail sent by local user to wrong SMTP address of my local domain say (nobody@xxxxxxxxxxxxx) after I installed IMS I can send and receive mails but no NDR for mails marked to wrong SMTP add. of my local domain.. Any one help me to find out whats wrong..?/ Any help is appreciated.. Regards premal. __________________________________________________ Do You Yahoo!? Check out Yahoo! Shopping and Yahoo! Auctions for all of your unique holiday gifts! Buy at http://shopping.yahoo.com or bid at http://auctions.yahoo.com