Hello all,
We are currently experiencing some problems with AOL’s new SPAM filter policy as I’m sure some other have been and it has caused us to take another look at our dns setup.
We currently have an outside ISP providing us with several public IPs and such. We have correctly setup this information within our Gateways/Firewalls (SonicWalls).
Our public IPs are NAT’d through to our private subnet and everything works fine this way (email, ftp, mysql, etc all works).
Our DNS servers are hosted on a Windows SBS 2003 and a Windows Server 2003 Standard platform. We have the appropriate FLZs setup for our domain and I think we have the correct RLZs as well.
Under our FLZ – domain.com we have 1 MX record pointing to our mailserver, priority 10, host/child domain is blank. The FQDN of the mailserver it references is a private IP (is this correct?).
The public IP of our SonicWall (which controls the NATs) is configured as a Reverse Lookup Zone. Within this zone we have Pointer records for our domain.com but when I check our domain using a service such as intodns.com I receive an error stating: “No reverse DNS (PTR) entries” and then it lists our public ip xxx.xxx.xxx.xx.in-addr.arpa
Also note that within the DNS server – properties – Forwarders – I have configured 2 the 2 public IPs of our ISP within the ‘selected domain’s forwarder IP address list’ box.
So at the moment I’m not sure what to do next. If anyone could help it would be much appreciated. And if further information is required please just ask.
Edit: Within our Sonicwall we have our ISP’s DNS servers defined within the DNS configuration. Is it necessary to contact our ISP to add the appropriate PTR and Host(A)records for our domain if we handle the rest of our DNS?
Thank you,