Ok fellas, help me out here... DNS just doesn't make sense to me sometimes.
I registered a domain to test out my new Exchange 2k server. The domain name is "aberrancy.com". I had a friend create an MX record on a DNS box that he manages (*that I know works properly*) and he pointed it to my Exchange box's public IP which is 220.127.116.11. Now, he can send e-mail to email@example.com and it comes through just fine. When I send e-mail to that address from my current e-mail address here at work, it gets lost in "unable to resolve DNS land".
If I ping that 18.104.22.168 address, it won't resolve. If you ping it from outside of this office, it resolves just fine. What the hell is going on here?