I have a dedicated server hosted at a data center running Windows Server 2003. The server is setup with IIS as a web server, hMailServer for Mail server. I use GoDaddy for my domain names so I have setup host records at godaddy like so: ns1.mysite.com ip: my servers ip On my server I have DNS setup for a Forward lookup only that directly reflects my IIS setup. I have 4 different IPs I can use on my server setup. Currently I have about 12 sites all hosted on different IPs from the same server. I am running my Hmailserver off the primary base IP, in all of my DNS records I have the mail server pointing to the IP that is related to the domain name. Here is one of my DNS records: Note: 66.XXX.XXX.226 is my base IP @ A 66.XXX.XXX.229 @ TXT ( "v=spf1 ip4:66.XXX.XXX.226 a ~all" ) mail A 66.XXX.XXX.229 MX 10 mail.mysite.com. www CNAME mysite.com. I have been searching all over for a simple understanding of Reverse DNS but I have had limited success. I have been reading that my data center will have to set this up for me but I don't really think that should be so since im hosting my own dns and all domain names are pointing from Godaddys host records to my servers base IP. The whole reason I need to do this is because email is getting rejected by many places like AOL, Yahoo, Gmail due to no reverse dns record or PTR. I've used DNSReport and it keeps coming up as no PTR record found. Any help would be greatly appreciated.

http://www.apnic.net/db/revdel.html Scroll about half way down to PTR.

I've created a reverse record in IIS but still no luck. I found something on DnsStuff.com that states my data center has to handle the reverse request and not my DNS. If this is actually true then there is nothing I can do. Can someone confirm this?

This is because you need a PTR record in PUBLIC DNS. Ie a PTR record that is accessible from the internet on a DNS host. Creating PTR records in your private DNS is futile as there non resolvable from the internet. The PTR record MUST be hosted on a DNS server on the internet and point back to your IP address.Whomever owns your subnet will need to set this address up for you. Either that or use a smarthost IE your ISP for mail delivery instead as they normally always have a PTR record already in place.