Hi, We have recently install Exchange 2007 in our Exchange 2000 environment. We moved a mailbox for testing. When an Exchange 2000 user try to send to a user in Exchange 2007, we receive this non delivery. Some help would be appreciated! A configuration error in the e-mail system caused the message to bounce between two servers or to be forwarded between two recipients. Contact your administrator. Note that the 2007 user can send email to exchange 2000 wihtout problem.
