I have a Exch 2000 server (Win2k Domain) connected to an Exchange 5.5
server Org.(WinNT domain). Configured ADC and everything appears OK
except users with mailboxes on the Exch2k/Win2k server cannot receive
mail from the Exch5.5/NT mailboxes. Users on the 5.5 server can receive
from the 2k server. And users on the 2k server can receive mail only if
its from the 2k server. There are no NDRs they simply disappear. The
tracking log utility reports success.