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I have a custom localhost, let´s say beta_localhost. The DNS is configured and I can access it without problem from Chrome and from IE7.

It get this error from Firefox:

  • Error Code 11004: Host not found
  • Background: This error indicates that the gateway could not find the IP address of the website you are trying to access, possibly due to lack of information in the DNS server.
  • Server: servername
  • Source: DNS error

I guess we have an IIS behind to manage the DNS.

Because I´m getting the error only on firefox but not on other browsers I guess is browser specific. Maybe I could bypass the problem with some option on about:config?

share|improve this question
Don't use underscores in domain names. They aren't valid. – Michael Hampton Sep 3 '13 at 10:56
Wow, didn´t know, I guess that maybe Firefox is more strict on that and that´s why it don´t allow it? Thanks for your help, I´ll try to confirm that changing this solve the problem. – irbian Sep 3 '13 at 11:35

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