I am having a small problem with a new DNS server that I have added to the network, which I am installing Exchange on. I am unable to find a solution to the problem and require some guidance. There is no information in the Logs to indicate that anything is wrong with the DNS servers, merely a log entry in AD that says that the Primary AD was not able to replicate on the Secondary AD because the DNS was unable to resolve itself. Running DNS Diagnosis revealed the following issue. Domain Controller Diagnosis performing initial setup: Done gathering initial info. Doing initial required tests Testing server: Default-First-Site-Name\KRONOS Starting test: Connectivity ......................... KRONOS passed test Connectivity Doing primary tests Testing server: Default-First-Site-Name\KRONOS DNS Tests are running and not hung. Please wait a few minutes... Running partition tests on : ForestDnsZones Running partition tests on : DomainDnsZones Running partition tests on : Schema Running partition tests on : Configuration Running partition tests on : redxpress Running enterprise tests on : redxpress.com Starting test: DNS Test results for domain controllers: DC: kronos.redxpress.com Domain: redxpress.com TEST: Basic (Basc) Warning: adapter [00000001] Intel(R) PRO/1000 XT Network Connection has invalid DNS server: 10.0.0.25 (<name unavailable>) TEST: Dynamic update (Dyn) Warning: Dynamic update is enabled on the zone but not secure redxpress.com. Summary of test results for DNS servers used by the above domain controllers: DNS server: 10.0.0.25 (<name unavailable>) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 10.0.0.25 Name resolution is not functional. _ldap._tcp.redxpress.com. failed on the DNS server 10.0.0.25 Summary of DNS test results: Auth Basc Forw Del Dyn RReg Ext ________________________________________________________________ Domain: redxpress.com kronos PASS WARN PASS PASS WARN PASS n/a ......................... redxpress.com passed test DNS

I had an issue with DNS/Exchange on my SBS2003 server. The server would not replicate data to other servers and mail services such as pop3 would not restart upon reboot. Turns out that the server had its own IP address as its primary DNS server under network connections and that was causing all my problems. Something about Exchange and DNS on the same box. Make sure that the DNS for that box points to another DNS server. Hope it helps, Philip