DNS request timed out

-

dc dns intergrated.

nslookup

server: dc1.domain.com.local

domain.com.local

dns request timed out.
    timeout 2 seconds.
dns request timed out.
    timeout 2 seconds.

finally after 5-6s will return right records.

use smiff catch dns packets, query local domain ,will forwarder root hints server, a.root-servers.net. , forwarder outside. means dns can't understand domain.com.local .

when lookup domain.com.local. . , quick. quick suggestion highly appreciated.

run

nslookup -d1 domain.com.local

followed

nslookup -d1 domain.com.local.

and review results. in essence, default, without trailing dot, nslookup append each of existing dns suffixes (on client running it) name specified - , after each of these name resolution attempts fails, tries original name specified. adding trailing dot eliminates behavior

another way disable behavior use nosearch option

nslookup

set nosearch

domain.com.local

for more details, refer https://technet.microsoft.com/en-us/library/cc754152(v=ws.11).aspx

in particular:

"domain name suffix searches used when dns name entry not qualified. qualify dns name, enter trailing period (.) @ end of name."

hth
marcin





Windows Server  >  Directory Services



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