Hi, We have cluster Avtive/Passive exchange 2003 in windows enterprise 2003. It was working fine before 2 days when we got the following problem: Some users when they send email to outside, the remote recepients receive the same email 20 or 30 times. I have checked the configuration but it seems that it is fine. can anyone help me what is the problem and how to solve it? waiting for your reply ASAP regards, Fahad