"I'm coming from a '.mil' domain and I encounter the same error."

In the event a request originating from a ".mil" domain results in the same DNS error, there is the possibility the DNS Table for your network is not configured to allow reverse DNS mapping. Contact your system administrator for more information. To test proper DNS configuration, click here.

"My reverse DNS mapping is configured correctly and I still cannot access the site."

Various factors could still lead to the DNS error. A few of the most common are:

• Your firewall is interfering with access to the site.
• Your browser cache is interfering with access to the site.
• Your proxy server is interfering with access to the site.

Have a System Administrator verify the tasks below to ensure proper configuration.

• Verify your desktop computer is configured correctly for your DNS server. If you are having problems accessing other outside sources, this is could be indicative of your system not being properly configured.
• Verify that your DNS server is configured correctly. Make sure your IP address is listed in the DNS tables and that it corresponds with the correct host name.
• Verify that your DNS entry has been propagated. This is how the NIC lets the world know who you are, and is how the DNS server does a reverse look up to verify you are a valid user.
• If your site is employing a proxy server, verify that your proxy server is able to resolve between the proxy server and your desktop computer.
• Clear your cache from your browser. There have been reports of the browsers cache interfering with access after experiencing DNS difficulties.

If the proper configuration has be verified and the error still occurs, pleas contact the DoD-CERT webmaster.