I'm in the process to script my dns server to auto generate PTR record and zones according the the non reversed one.
However, I wonder if it make sense/is legal to add PTR record for all the CNAME records in addition to the A records.
In my mind it would make sens and allow me with an quick reverse dig to see all the aliases of a particular server, as many are exposed with a prettier fqdn than their hostname one.
Keeping in mind that all the IPs form this zone are local network ones and internal use only.
I've search but haven't found any argument for or against reversing the cname too.
So my question is : Is it legal to do that and if yes is there any argument against doing it ?