I have registered a domain name (example.com) through a registrar and have it configured well enough so that when I go to http://example.com from a remote pc I get my default website. When I go to https://example.com I get an Exchange Server web console I've installed. However, if I go to remote.example.com (http) I get sent back to my default website and same with remote.example.com (https) I get sent back to my exchange server -- basically the subdomain directs to whichever protocol is specified.
What I can't comprehend is I have it setup via DNS so that if I go to remote.example.com a webpage hosted on another server (as intended) shows -- this works when I do it on the server hosting the dns settings. It seems my internal dns works but it does not work externally.
I have searched and read and can't figure this out. Is there a book I should be reading? Does anyone know what I am doing wrong? I am new to this stuff and trying to learn.
Thank you for any guidance.
Zone file export for @Damon:
Name Type Data Timestamp
(same as parent folder) Start of Authority (SOA) , exchange.example.com., hostmaster.example.com. static
(same as parent folder) Name Server (NS) exchange.example.com. static
(same as parent folder) Host (A) 192.168.1.104 ?1/?11/?2015 6:00:00 PM
exchange Host (A) 192.168.1.104 static
remote Host (A) 192.168.1.121 static
www Alias (CNAME) example.com. static