We had issues in DNS as one of the VM server was not able resolve to the alternate DNS Server.
Scenario is :
Mumbai 4 DC's
2 Physical DC : 2 DC's
2 VM's : ADC's.
One the VM server was not able to resolve to the alternate DNS Server due to Primary DNS Server (ADC) was having some issue and was down.
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** Both are ADC (Additional Domain Controllers) which are on VM's
** Primary ADC01 and Secondary ADC02.
** VM server host entry got deleted from DNS.After that we created new entry in DNS Server.
** One of the VM Server was not able to query Alternate DNS Server because Primary DNS Server was down.
** VM Server should have contacted to alternate DNS Server in case of primary DNS Failure which did not happen.
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Yesterday the VM's server host entry was got deleted from DNS Server after that we created new entry.
Pramod Jadhav 9867715203