Hi guys! 1)Event ID 4000 - The DNS server was unable to open Active Directory The DNS server was unable to complete directory service enumeration of zone XYZ.COM. This DNS server is configured to use information obtained from Active Directory for this zone and is unable to load the zone without it. Check that the Active Directory is functioning properly and repeat enumeration of the zone. The extended error debug information (which may be empty) is "". The event data contains the error. 2)Event ID 5504 The DNS server encountered Daily we are facing couple of time in a day.Different ip addresses like 220.73.220.4 208.185.132.166 62.151.2.8. The DNS server encountered an invalid domain name in a packet from 110.73.220.4. The packet will be rejected. The event data contains the DNS packet. 3)Primary DNS is replicating but secondary dns is not repicating what is the problem Thanks in advanced Techgfx

Secondary DNS is readonly by design. Replication is only from primary to secondary. Appears you may have one server as Ad integrated and the other is not by this error: "This DNS server is configured to use information obtained from Active Directory for this zone and is unable to load the zone without it" Your other error would lead me to believe you have an additional misconfiguration of dns by not having your ISP's dns servers listed in the forwarders tab. Those errors deal with resolving external domain names. Imagine the power if you knew how to internet search

Thanks for replay 1)Appears you may have one server as Ad integrated and the other is not by this error: "This DNS server is configured to use information obtained from Active Directory for this zone and is unable to load the zone without it" I didn't understand what you mean. 3)This question is not related to 1,2 question this separate question 3)Primary DNS is replicating but secondary dns is not repicating with primary dns what is the problem How to rectify it. I friend asked me this question.What i tell i don't know.

Are these homework questions? Imagine the power if you knew how to internet search

no he faced in his office like this scenireo