I am deploying an intranet application to a business. The relationship is very casual at this point (no hard feelings that they have to test the app by navigating to an IP address). They also own an external domain, call it www.widgets.com. I have access to the host's control panel and access to the DNS records.
What I'd like to do is point 'mysubdomain.widgets.com' to an IP address that will resolve internally to the businesses server where the application is hosted. I am currently under the impression that i've done that successfully but when we try to access the app via the subdomain we created, it does not resolve.
In the control panel at the hosting company I created an A record for the subdomain like so:
mysubdomain.widgets.com. 14400 IN A 192.168.0.190
I am able to run a tracert to that subdomain from an external network and get back 192.168.0.190 as the first IP. DNS appears to be working! However when I attempt to do this from within the business's network, not only does the IP not resolve, but I don't even get a response. Rather than a timeout which is what I would expect, I get a message saying the machine cannot be contacted.
I am sure there's something obvious I'm missing here but as I am not primarily as system administrator this is all pretty uncharted territory for me. I understand the high level, but that's about it. Anyone have any suggestions as to diagnostics or something I could try to debug the problem?