unable to access UNC share via FQDN – across domains

Hi

I am having a problem accessing a share on a windows 2003 server by it’s Fully Qualified Domain Name (FQDN) from a different domain.

I can ping the server by IP address and FQDN, and I can access the share by IP address, but not by the server’s FQDN.

I am coming from a different domain, so I need to use the FQDN rather than just the server name.

i.e.
This works: “\\192.168.0.1\share”
This doesn’t: “\\server.mydomain02\share”

I get the error:
“Address Bar: Windows cannot find ‘\\server.mydomain02\share’. Check the spelling and try again, or try searching for the item by clicking the Start button and then clicking Search.”

I am able to connect to the share by the IP address without any problem.

Can anybody help?