We have a server named PWAPP that runs a web-based app used by dozens of people.
The path to the app is http://pwapp/appname
What happens is random times during the day, the site will start trying to redirect to pwapp.com (which is owned by a domain squatter). I've logged tickets with the app vendor and finally determined that it's a DNS issue of some kind.
In DNS, I created a forward lookup zone for pwapp.com with an A record pointing to the IP of the server named PWAPP, but the problem still occurs. I also added an alias CNAME with the FQDN and the problem still happens.
I've checked all through IIS and there is nothing forwarding or anything like that. The app vendor confirmed this. We have some kind of networking problem because other internal servers running IIS will sometimes do the same thing.
On my own PC I have edited HOSTS to set pwapp to the IP of the server but I still get page timeout issues on my end.
Part of what makes this so frustrating is that it's hard to test when the issue is so sporadic. I'm to the point where I wonder if renaming the server to something not registered as a domain name might help. Any suggestions?