Reverse DNS pointer

i have an exchnage server that hosts 6 domains
(we have 5 fifferent devisions with different domain names)
my question is my first domain has a reverse dns pointer for the domain
how do i create reverse dns records (pointers) for the other 5 domains, since its the same external static ip address?

can this even be done
whats the best practice  for this
dano992Asked:
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PapertripCommented:
how do i create reverse dns records (pointers) for the other 5 domains, since its the same external static ip address?
You can't, there can only be 1 PTR record per IP.
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Neil RussellTechnical Development LeadCommented:
Have a read of this article, should all become clear :D

http://www.chrisnewland.com/av/30/solving-reverse-dns-problem-for-multiple-domains
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dano992Author Commented:
all my 6 domains point to the same website, the A record points to the same external Ip address
so how would that work in my case
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Neil RussellTechnical Development LeadCommented:
"all my 6 domains point to the same website"

Why do you talk of WebSites??

The article i posted explained the PTR record.  You only have ONE PTR record per IP Address. you cant create more.
These are nothing at all to do with websites but are used mainly is email validation and spam prevention nowadays.
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