I have a set of Exchange 2000 servers. One master and 4 slaves, what I mean
by this is the master was the first one built in domain.com the rest look
after mailboxes in child domains of domain.com. The root mail server has a
set of public folders that its users use. I want to be able to allow mail
users in the child domain access to the public folders. Is there a way to
sync the servers.

They are all part of the same exchange organisation domain.com, mail
addresses are stamped using recipient policies.