Mail hangs in que on 2nd site until message from 1st site arrives, then mail flows and directory replication starts.<br>Otherwise when the 2nd site tries to replicate or send I get<br>error <br><br>"Event ID: 9318 " <br>An RPC communications error occurred. Unable to bind over RPC. Locality Table (LTAB) index: 66, NT/MTA error code: 1722. Comms error 1722, Bind error 1722, Remote Server Name xxxx [MAIN BASE 1 500 %10] (14) <br><br>We are using a site connector on a T1 and our bandwith utilization is less than 1% so I know its not<br>that. Any Ideas?