AFP Sharepoint issue…

Hello all. Working on a new 10.5.4 OD setup and having a slight issue with getting an AFP sharepoint to mount on a client workstation. Server and client are both 10.5.4, when the client attempts to login you can see "try" to log in, in the AFP logs, however it logs out almost instantaneously. The client gives the following message at the loginwindow: "You are unable to login to the account "x" at this time. Logging in to the account failed because an error occurred. Checking the servers system log, the following is logged: ODMaster /usr/libexec/mount_url [5519]: The address for odmaster.x.loc is a local address, not allowed! Any insights would (as always) be much appreciated!