Jim, If I understand the scenario, your E5.5 server processes the inbound SMTP mail for your company. When it receives a message for a E2k user, it does not forward it. Does the message sit in queue? Are the E2k and E5.5 servers part of the same Exchange org? -----Original Message----- From: jim wilkinson [mailto:wilkinsonj@xxxxxxxxxxxx] Sent: Wednesday, March 27, 2002 9:56 AM To: [ExchangeList] Subject: [exchangelist] Upgrading to EX2K http://www.MSExchange.org/ I am currently in the process of migrating our e-mail system to exch2K, the problem I have is we wish to run both exchange 5.5 and E2K servers at the same time, the idea being that we move a few users from the exhange 5.5 server over to the 2K server at a time, I can get the user accounts to sync using the ADC but I can't then get the 5.5 server to send mail to the 2k server when it receives a message for a recipient on the 2k server (all mail comes in to the 5.5 server) At present I have this set up in a test environment. Any help, recomended reading or a kick in the right direction will be greatly appreciated. ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: rhite@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------ The information contained in this e-mail message may be privileged, confidential, and protected from disclosure. If you are not the intended recipient, any further disclosure or use, dissemination, distribution, or copying of this message or any attachment is strictly prohibited. If you think that you have received this e-mail message in error, please delete it and notify the sender.