I am trying to get Exchange 5.5 and Exchange 2003 to co-exists so that I can gradually move my users over little by little.
I have installed exchange 2003 on a member server and my exchange 5.5 server is also on a member server.
Both exchange servers are on the same Windows 2000 domain.
I installed the ADC on my exchange 2003 server and have managed to get replication working one way only.
I am now able to send mail from Exchange 2003 to Exchange 5.5, but cannot reply to the user.
I suspect its because replication from Windows to Exchange has not taken place.
I have tried using an account that has "Service Account Admin" as well as "Permissions Admin"on exchange 5.5.
The Recipients container if have selected as destination is still empty.