Bruce thanks as always for the enlightenment. You can be sure I will follow the instructions above wow thanks. Constantine and Bruce the support for my server host, the good folks at Softlayer, we are sorting through this as well and working toward the total solution, for which Bruce has so eloquently provided to us. I have many domains in IIS on my windows 2012 server r2. Let me pass along what support has chimed in with and I will post back the results.
"What Trae was referring to is that you cannot set a different PTR record for one IP address meaning it cannot have two values only one. So in that case you may need to set the domain on its own unique IP address so that the PTR value can be set to a hostname that resolves back to hat unique IP address.
Like say you have two domains:
And in our example both are set in DNS to IP 22.214.171.124
Both can be hosted on the same IP address 126.96.36.199 with virtual hosting but the IP address 188.8.131.52 can only have one PTR record. So in order to set another unique PTR you would need another IP address assigned to one of the sites so you can do so.
Though technically this may not be necessary as the hostname you setup for the PTR value just really needs to resolve back to the IP it is mapped to so as long as the hostname value maps back to the IP it should be fine, although some providers may not like that and still flag this as spam but usually when the domain name's IP address MX record and PTR all resolve and match the same IP address you usually are not flagged as spam or other."
So we shall see and I would bet BB might know what the outcome is going to be. Will keep you all posted.