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Major Reverse DNS Problem with emails, e.g. AOL

I host my own mailserver on Windows SBS 2003 Prem / Exchange Server 2003. The domain name for this server is s1.gurkanandgurkan.com, with an IP of and works as our SMTP gateway behind our firewall (DMZ port).
We are having major problems with getting emails to AOL and some other servers. They say the cause is Reverse DNS and wherever I look I find a negative Reverse DNS lookup. Whatever we have tried doing is not solving the problem which is now going on for 6 months. What can ve do to fix it. Please help.
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1 Solution
Go and look at my DNS Configuration page...


That explains most things.

Your reverse DNS lookup is set by your ISP. No one else. You need to call them to get it set. If they tell you to speak to your domain name registrar then ask to speak to someone who has a clue.

you talk to your isp, the one that provides your internet connection.

Also you may want to block access to port 80 on your server. Your SBS config page is comming up when i login to
agurkanAuthor Commented:

Great site. Good answer. At least I know that it is not me but the ISP.

On your reccomendation, I talked to the ISP however, being a small ISP, although they have the will, they do not have the knowledge in setting up the RDNS. Do you have any information that would help them.
Ask for the call to be escalated. Someone there must know how it is set. If they are a really small ISP then it may be set by the upstream provider.

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