DNS issue - Removing and rejoining SEP SQL server to the domain

Hi, 

we are experiencing issues with the SEP SQL server not being able to see the DNS servers.

 What impact will it have if were to remove the the SEP SQL server from the domain and rejoin it?

Please help.
Thanks!

I didn't find the right solution from the Internet.

References:

https://www.symantec.com/connect/forums/dns-issue-removing-and-rejoining-sep-sql-server-domain

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