Recovering DNS

[Fazal-Ur Rehman Shah]

How to recover DNS if someone deletes it by mistake ?

 

[Herb Martin]

How to recover DNS if someone deletes it by mistake ?

Presuming we are talking about ONE or a FEW zones,
otherwise it's pretty much from backup:

From backup. From a secondary. Files on disk. Manually.

If you have replicated, then the secondary method won't
work.

If you lose the Primary, you can just make a secondary the
Primary (temporarily) and reverse the replication direction.
Works with AD Integrated too (and the method here works
for AD integrated the same as a Primary except that deleting
records on ONE AD-integrated removes them from all just
like the Primary-Secondary.)

Check all DNS servers for the zone to see if there is a (useful)
copy of the zone in your DNS directory (usually under System32).

Backup or type them back into the server.

 

[William Stacey]

Unless you have a lot of manually entered IPs (i.e. unix hosts) then all you
need to do is create the zone again, make it dynamic update, and run dcdiag
/fix on the servers. Your clients will register again at bootup or using
ipconfig /registerdns.

 

[Michael Snyder [MSFT]]

Can you provide more information:
Did you delete the DNS server node in the DNS Manager snapin?
Did you delete a zone?
If you deleted a zone, was it an AD backed zone or a file backed
zone?
Did you delete a record?

Thanks.