I have an Exchange 5.5 server SP3 on a network with app. 60 users all using Outlook97 or Outlook2000. Periodically (2 or 3 times a day)when replying to emails the program appears to hang for app.60 to 75 seconds after you hit the send button. Afterward the email may sit in the outbox for upto 2 or 2.5 minutes before it is sent. I can't find a common thread to the emails so I believe it to be either a network issue or more probably an exchange server problem. Any help would be appreciated. Chris Hughes