SOA questions, problems with DNS

Quick topology:  3 DC's, all running DNS and AD.  2 of the DC's are located at our office and the other has been located at our Datacenter which basically has a T1 connection to our office.  

We recently moved the DC at the datacenter to a new subnet and have had some issues with firewall ports and routing, however in the midst of this I have noticed that all of the DC's are listed as thereselves being the SOA.  Is this correct, or should this be modified to point to 1 specific DC?  
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If you're using active directory integrated DNS, each domain controller will list itself in the SOA record.

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tgrizzelAuthor Commented:
OK, this we are, and that we shall leave it.

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Windows Server 2003

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