Hi everyone. I've got a 2 domain setup with a two-way trust set up, and have a user getting an error when trying to map a drive to a share on a server. The name of the server is \\rgm-server.domain.com (domain.com used for ease) and we have to use the FQDN
because they are not part of the same forest. When the user maps a drive to the path \\rgm-server.domain.com\share, he gets the error "The mapped network drive could not be created because the following error has occurred: An extended error has occurred".
If he then swaps out the FQDN for the machine's IP address \\10.0.1.51\share it works perfectly. When he does a net use command from thr command prompt, it gives an error 53. I have checked logs on his machine, and I see no entries relating to this. WHen he
tries to just go straight to the server from the run command, \\rgm-server.domain.com, he gets the error "... is not accessible. YOu might not have permission to use this network resource. Contact the admin of this server... The user name could not be
found". But, again, if he uses the IP address, it works fine, and he can access everything on the server. I'm baffled.
-Time is perfectly synced within miliseconds, except that they are in the Central time zone, and we are in the Mountain time zone, so they are off by an hour.
-This is Windows 7 x64 client, and Windows server 2008 R2 SP1
-Computers are on different subnets (10.0.1.x and 10.0.2.x)
-Computers are connected through a firewall based persistent VPN. There are no restrictions on that connection.
-User can properly ping the server via the FQDN, and it resolves. User can also do a ping -a and get proper reverse DNS lookup. I can also do DNS lookups in both directions of his computer from the server.
It makes no sense that this would work fine with the IP address, but not with the FQDN. There are lots of threads about this all over the place, but I've found nothing that helps.
Anything else that I could check?