Computer Name Could Not Be Obtained

i have stupid problem that had effect my application distripuotion which i think is related either to connection string or something of the security setting of sql server or iis , actually i do not know what to do: the details of the problem is a have multi connection strings in this form :

sqlconnectionPubs = New Data.SqlClient.SqlConnection("Server=SALES-SERVER;Database=NajdiaServiceRequestDta; Asynchronous Processing=true; Integrated Security=True; Trusted_Connection=Yes;")

and the connection works just fine in my computer , even i put the database in the main server and still i can post data from my pc to the main server where my database exist but when i try to post from any other computer in the network it tells me : run time error : computer name could not be obtained.

I appreciat any help

thanks,