DNS with Fedora Core 3

[Hugo Rebello]

Guys,

I am using Fedora Core 3 like my DNS server. It's working very well. 
However I need active "allow update" option to Windows 2003 Active 
Directory.
It's working also, but just only one server. If I included two address 
in "allow update" option, I cannot restart the named.
How can I include more than one server in "allow update" option ?

Thank you.

Cheers,
Hugo