@raj_shrivastava11
What is your WFA version?
Can you check that you are able to do DNS lookup and reverse DNS lookup from your WFA server for any cDOT which is currently not connecting.
Open a Powershell console and try:
1. For DNS lookup for the Cluster FQDN.
[System.Net.Dns]::GetHostAddresses("cluster FQDN").IPAddressToString
2. Reverse DNS Lookup for the Cluster IP:
[System.Net.Dns]::GetHostEntry("1.2.3.4").HostName
Let me know the results.
sinhaa
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