Our company website is abccompany.com while our e-mail domain is .net, i.e., firstname.lastname@example.org. Long story behind that but it hasn't been a problem until now.
GoDaddy is our webhosting provider and has pointed .com and .net to the site. This has worked for the last four years. Now, nobody can get to site using .net from inside our network but using .com works. At home, at Starbuck's, in a hotel....no problem with using either .com or .net. The DNS settings on the GoDaddy console look correct and I certainly haven't changed any of them. Only the webmaster and I have access to the GoDaddy account and she said that she hasn't changed anything.
Windows Server 2008 R2 - domain controller (AD, Peachtree Accounting and files)
Windows Server 2008 R2 - app server (a print management app and a knowledge base using IIS)
Using Active Directory
Ubiquiti UniFi APs and controller
60-70 wireless devices, 25 wired devices (printers and desktops)
192.168.1.1 - management network
192.168.10.x - wired devices
192.168.15.x - VoIP phones
192.168.20.x - wireless devices
192.168.25.x - not used at this time
We have MPLS and a cloud firewall through our provider, Windstream. It hasn't given us any problems in the past and I haven't talked to them yet about this issue.
Does this sound like an internal issue and, if so, where do I start looking? If I'm in the wrong forum, please advise.