Is something perhaps registering the 2nd address on behalf of the servers? If you're setting the individual servers to not register, it would seem reasonable to think that they're not registering.
You might delete a record on the DNS server that's got the bad record, then set up a packet monitor to capture your dns traffic, just to see if it's a DDNS Update or Registration coming from somewhere other than the DNS server or the referenced server themselves. Are your DDNS set for unsecured registration? Those adapters on the 2nd net, aren't running via DHCP are they? Bob -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, January 17, 2008 12:55 PM To: Active Directory Admin Issues Cc: [EMAIL PROTECTED] Subject: Odd Dynamic DNS issues To All, If there is a better forum for this question, my apologies and thanks if you can redirect me. We have several Windows 2003 domains in our environment and utilize dynamic DNS. We have multiple internal servers which have 2 NICs in them. One NIC is on a general access subnet. The other NIC is on a private subnet used for backups with no public access to it. Over the last two weeks we have had issues with the backup IP addresses turning up in DNS even when the check box in the TCP\IP settings for registering the IP address in DNS is NOT checked. This causes DNS resolution problems, of course. The problem seems to be isolated to one Windows domain but not all servers in the domain have the problem. The DNS server is in a different domain. On the servers that have the problem, the DDNS checkbox seems to be irrelevant. The problem does not change whether we check the box or not, so enabling registration and then disabling it does not make a difference. So far as we know, no patching has been done that would affect this. We have found a registry hack that does seem to fix the problem but no one (we even called Microsoft) has been able to suggest a possible cause for this. We would like to know what is causing the problem in the interest of prevention. Ideas? Suggestions? Regards, Eric Harris PC/LAN Support NSRI (USA), Inc. (206)464-5194 ~ NEW: CounterSpy Enterprise: Centralized Antispyware - #1 in eWEEK Test! ~ ~ <http://www.sunbelt-software.com/product.cfm?id=400> ~ ~ NEW: CounterSpy Enterprise: Centralized Antispyware - #1 in eWEEK Test! ~ ~ <http://www.sunbelt-software.com/product.cfm?id=400> ~
