Hello- we are experiencing an SMTP address receiving a huge amount of NDRs for SPAM emails sent to unknown recipients. We suspect the address has been spoofed by a SPAMmer. Does Exchange provide a facility for anti-spoofing? Thanx -michael

It depends on the version you are running. Exchange 2003 offers the Intelligent Message Filter (IMF), but 2007 offers a much wider range of anti-spam features. http://www.microsoft.com/exchange/evaluation/features/default.mspx Tony www.activedir.org