I have an exchange server setup and I'm using godaddy for my dns. It's all working fine, except for when I send to this one user I a bounce back from there mail filter (MagicSpam) with the following:
Your server IP address [xxx.xxx.xxx.xxx] does not have a valid reverse DNS entry [xxx-xxx-xxx-xxx.cid.global-gateway.net]
I also looked up my ip in mxtoolbox and got "Reverse DNS does not contain the hostname"
A bit strange as I can send and receive from many other people including hotmail, gmail etc. Do I need to create an rDNS record here in godaddy or my isp?