I guess in this case you have a IPV4/V6 confusion.
Try a ping from the sim server and check the address try a nslookup of the server name.
I once saw that the return of packets did not work due to W2008 IP V6 settings.
I guess in this case you have a IPV4/V6 confusion.
Try a ping from the sim server and check the address try a nslookup of the server name.
I once saw that the return of packets did not work due to W2008 IP V6 settings.