Currently, I am struggling with a problem causing one of our servers to lose its DNS access in irregular time intervals. The symptoms are that, for some minutes, any call to nslookup fails with error messages such as this one:
C:\> nslookup –vc dc.domain.loc Server: UnKnown Address: 192.168.12.11 *** dc.domain.loc wurde von UnKnown nicht gefunden: Unspecified error.
However, nslookup seems to work properly without the "virtual channel" option:
C:\> nslookup dc.domain.loc Server: dc.domain.loc Address: 192.168.12.11 Name: dc.domain.loc Address: 192.168.12.11
After some minutes in this state, the server seems to recover and calls to nslookup work with the "-vc" option as well again.
Any ideas where this problem could be rooted?
Thanks for any suggestions and best regards