Same computer's name in different domain

Is it possible to same computer's name but different domain name, for example
mail.domain1.com and mail.domain2.com. I try it but I got an error message
"duplicate name..." I'm using windows server 2003 standard edition.

Thanks.

Hi,

It is possible only if the two computers are in different network.For
you the systems are in same network and in the same forest.

So it will show that error message as you try to give the same netBIOS
name.

John Mathew