Prior to Exchange Server 2003 SP1, you could only move from Exchange 5.5
servers to Exchange 2003 in the same administrative group/site. SP1 removed
the limitation. Don't need native mode (since that by definition excludes
Exchange 5.5 servers).
Check the move mailbox section:
http://www.microsoft.com/technet/prodtechnol/exchange/guides/Ex2k3DepGuide/94541
013-3bf1-4144-a880-9cc4fee39946.mspx

Signature
Bharat Suneja
MCSE, MCT
www.zenprise.com
blog: www.suneja.com/blog
-----------------------------------------
> Hi !
> We have a setup which has 3 Exch5.5 sites. We are looking at performing
[quoted text clipped - 12 lines]
>
> Ms Moc