I have an annoying problem with SBS 2008. Everything was fine till I authorized external DHCP running on Linksys router. Now I have that kind of situation where I think everything must be fine but it isn't. Now DNS records of computers in domain aren't updated. The corresponding option is enabled in DHCP server's configuration, however it has no effect. I don't see anything in logs, too. I've tried everything – even removing that DHCP server from network. Now some computers get IP from DHCP, and some don't. It's very strange thing. Also, I've checked if it was a hardware problem and it must be something different. I think it's releated to that empty logs. Ah, and before authorizing that DHCP on Linksys, that on SBS 2008 was crashing with message about other unauthorized DHCP servers in the network, but strange thing – everything was fine. Any ideas?
Windows SBS 2008 DHCP problem: no DNS updates
dhcpdomain-name-systemwindows-server-2008
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Best Answer
If you enable DHCP on the Linksys then you will get no DNS updates on the SBS because it will no longer be involved in the process. You shouldn't have more than 1 DHCP server on your network otherwise they will conflict.