I have a Server 2008R2 machine running a couple of SharePoint sites via IIS. Each site has it's own IP, each IP is assigned to a separate physical NIC on the machine. Each site has it's own A record in DNS.
The problem is, every day or two, a second A record appears for one of the site's IPs, pointing it to the wrong FQDN.
A Records exist for:
Machine1.domain.com - 10.1.4.1
Machine2.domain.com - 10.1.4.2
Every day or two, a second A record appears for:
Machine2.domain.com - 10.1.4.1
This new, erroneous A record does not REPLACE the original record for Machine2.domain.com, but rather, it co-exists with it, causing resolution issues.
I don't think I want to disable dynamic DNS on the Domain Controllers, but I need this second A record to stop appearing!