Hi, I am using Exchange 5.5 sp4 at WinNT 4.0 Sp6a. My problem is that I am receiving e-mails from a particular domain, but I can't send e-mails to that domain. Kindly note that there is restriction applied for that site. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> Regards, Chand Deshwal (M.Tech CS&E, MCSE, CCNA) Network Administrator Kampsax India Ltd., Gurgaon ph: +91 124 6348259-62, Extn. 712 chand@xxxxxxxxxxxxxxxxx <mailto:chand@xxxxxxxxxxxxxxxxx> http://www.kampsaxindia.com <http://www.kampsaxindia.com/>