a query of our public IP address on spamcop.net shows that we have a DNS error it says:
"68.x.x.x is mail.company.org but mail.company.org is 204.x.x.x instead of 68.x.x.x"
I believe this to be an issue with the way our DNS is setup:
our 68.x.x.x is our public IP with our ISP. It is NATed for everything, web, e-mail, etc. Internally we have a Windows 2003 DNS server for our network, with domain forwarders setup to point to our ISP DNS servers (167.x.x.x).
We have Custom DNS service hosted on DynDNS. Where the following are listed:
company.org Type A 68.x.x.x.x
company.org Type MX 5 company.org
mail.company.org WebHop https://outlook.company.org/exchange
The 204.x.x.x address is that of the DNS servers at DynDNS, and apparently they dont' match up to DNS servers of our 68.x.x.x IP.
How can we fix this so our DNS is correct? There is currently NO problem, e-mails are sent and received fine, it just that some anti-spam servers may delay our e-mails as a result of the IP address differences for the mail.company.org name. I believe that we kept DynDNS for our DNS incase we ever have the need to switch ISPs that we can keep the same DNS. I'm assuming some changes will need to be made on the server end to somehow point to DynDNS (204.x.x.x) as opposed to our ISP's DNS (167.x.x.x)
What modifications should be made and to what in order to resolve this issue?