Weird Exchange 2010 DNS issue

Hi Guys,

Happy Monday :)

I am having a weird problem where emails to a certain host are being delayed.

When we try to resolve the host name on the Exchange Server, it cannot resolve the name.

When we try to resolve the host name on any other computers in the network including the other servers, it resolves just fine.

We try resolving other host names from the Exchange Sever and those resolve just fine.

We checked the hosts file and there is nothing there, all lines are commented out.

DNS services are provided by our primary domain controller which are also the Exchange Servers DNS entries.

The Exchange Server is not a DNS server.

PLEASE HELP Obi Wan you are my only hope !!