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SPN, netbios, DNS, and name truncation?

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I recently started managing the domain for a company thats been around for 15 years- over the years, AD has been beaten up a bit and I'm trying to clean things up.

Currently, I'm getting an event ID 11 SPN error for the following service/machine:

  • MSSQLSvc/BL-SharePoint2010.blah.com:49558 is registered on these accounts:
    • CN=AdminBlah,OU=Virtual Users,DC=Blah,DC=com
    • CN=Blah SharePoint Administrator,OU=SharePoint,OU=Virtual Users,DC=Blah,DC=com

When I go to ADUC, I can't find a BL-SharePoint2010.  Same thing in DNS.   I can't find a DNS name for it either.  Nor can I manage it or connect to SQL using SQL management studio.

The closest I could find is BL-SharePoint20.  When I checked with an admin that's been here for a bit, he said that the name is truncated because it's too long for netbios.

Long story short, my spidey senses say if it's not in AD or DNS, it doesn't exist and I can go ahead and delete it. But since I just got here and the admin who advised me has ben here for a long time, it seemed worth a reality check with you kind souls.  Anybody heard of this type of behavior in AD before?  Am I safe to delete these SPNs? 


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