I've spent the last few hours battling to get the latest version of SolidCP working with a SimpleDNS v6 Cluster.

The control panel was allowing me to activate and enable dns how upon inspection of the SimpleDNS server the zones were not been created and after going back to the domains page, SolidCP reported the domains dns as being disabled.

There were reports of a bug with the last published version of WebsitePanel in which the authors of SimpleDNS released a patch which was supposed to resolve the manner in which WebsitePanel creates zones and adds zone records.

To get SimpleDNS working, follow the steps below

On the SimpleDNS server ensure that the appropriate setup is complete, ie install the latest version of web deploy

Install SolidCP Server

edit your web.config file within the C:SolidCPServer asp.net v4.5 folder

from this

<appSettings>
<add key="SolidCP.HyperV.UseDiskPartClearReadOnlyFlag" value="false" />
<add key="SolidCP.Exchange.ClearQueryBaseDN" value="false" />
<add key="SolidCP.Exchange.enableSP2abp" value="false" />
<add key="SCVMMServerName" value="" />
<add key="SCVMMServerPort" value="" />
</appSettings>

to

<appSettings>
<add key="DisableAutoDiscovery" value="true"/>
<add key="SolidCP.HyperV.UseDiskPartClearReadOnlyFlag" value="false" />
<add key="SolidCP.Exchange.ClearQueryBaseDN" value="false" />
<add key="SolidCP.Exchange.enableSP2abp" value="false" />
<add key="SCVMMServerName" value="" />
<add key="SCVMMServerPort" value="" />
</appSettings>

Install the simpleDNS sdnsapi-setup.exe available from SimpleDNS's website

Perform an IIS Reset

make sure that your firewall rules allow your DNS server to connect to itself on port 8053

Now setup simpledns as a dns server within SolidCP but be sure to select version 5, and not version six.

Add your secondary name servers to the list of secondary, third and fourth name servers (no need to create additional name servers nor install solidcp on all of your other name servers)

Voila, you're done