Recently built a new Exchange2K/Standard server to add to our existing 2-server Exchange2k/Standard organization. The new server was made a 'member' of an existing routing group. The other two servers are masters of their respective routing groups and also exist as bridgehead servers. They have interoperated without any issues for about two years. Test accounts were created on our AD-integrated (and W2K/Server-native) network, replete with mailboxes on the new server. The test users send/receive internal and external mailings, and can see the global address book, use distribution lists, etc. However, the public folders that were given birth on the original two Exchange boxes do not replicate over, despite multiple attempts to set up replication and tweak client permissions on the public objects (to include test accounts). Am clueless as to why replication fails to occur and am hoping an Exchange guru can make me look foolish. Perhaps our mistake was to make the new box a member of an existing routing group instead of a master in its own? Any help would be sincerely appreciated.