Message Delivery - General tab - Add Include your internal IP network(s) and the IP addresses of any trusted mail servers outside those networks that routinely handle or originate mail. _____ From: Biswajit Sahu [mailto:biswajit2000@xxxxxxxxx] Sent: Monday, February 13, 2006 3:43 AM To: [ExchangeList] Subject: [exchangelist] Sender ID Dear All, I have Exchange 2003. I installed sp2 on Exchange. I had enabled Sender ID filter and choose Acept option. But i am getting error on event viewr sender id must be configured with a list of trusted mail sever before it can be enabled. Event Id 7518 Where is the mistake. Regards, Biswajit