few 2012 R2 Cluster questions (mainly DNS, PTR)

Hi guys

First of all, I don't have a PTR record for my cluster. What could be a reason ?
I tried to find any useful article but it's all BLAH BLAH so I would really appreciate clear instructions.

Other than that, what DNS records should be present for a cluster.

And last question - after destroying a cluster, I was left with AD account for it - is it safe to just delete it ?

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Muhammad BurhanManager I.T.Commented:
as you may know that PTR Record is used when some host trying to get another hostname against IP.
normally most of the services and communications uses 'A' records to get the IPs against hostnames.
in clusters, all of the host knows other hostnames and they communicate with each other by resolving the hostnames though DNS Forward Zone 'A records'.

if you remove completely any host/node from the network, so it safe to delete its AD account.

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Seth SimmonsSr. Systems AdministratorCommented:
First of all, I don't have a PTR record for my cluster.

is there a reverse lookup zone in DNS for your subnet?
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Windows Server 2012

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