I am currently hosting a website within my university environment with the permission from my university sysadmins. This is my scenario:
I am running a DNS server on my own and I am using one of the hosting provider's DNS server to point my DNS name to the IP address of the machine in which I am hosting the website. It all works well.
Now when I am running postfix and try to deliver mail to a gmail or an hotmail id, the mail is not delivered. When I ran dig -x with my IP address, I found the IP address is pointing to my university assigned FQDN of my machine not the one I want (mydomain.com). Looking up the same in ajaxdns.com gave me the same results.
My question is:
How can I change the reverse dns records to point my IP address to my domain and not the university domain under which my site is hosted? Will I have to run my own DNS server to accomplish this?
As you have figured out by this questions, I am quite new to this area. Looking forward to your help.