No standard web pages containing all your search terms were found.
Your search - "www.domainname.com" - did not match any documents.
This is not a normal return value from Internet Explorer or Firefox if you have indeed entered a complete URL (including the "http://").
When you *don't* enter a complete and valid URL your browser tries to do an auto search for the string you entered - in this case the error message is claiming that you entered "
www.domainname.com" and NOT "
http://www.domainname.com". I've seen this sort of behavior in computers infected with some sort of DNS hijacking software ("New dot net" was a great one for doing this).
Alternatively, SME by default is trying to proxy your Internet connections, so that whatever you enter needs to be resolvable by the SME server itself as well as your workstation. For example, if the http proxy is anabled, and I use a VPN to connect my workstation to a client's network, then try to access a website on the client's internal network, I get an error from Squid saying that the website can't be found. In your case, this would only apply if the value returned by "nslookup
www.domainname.com" on your workstation is different from what is returned by the same command in a command shell on the SME server itself.
Finally, what happens if you browse from a workstation on the LAN to
http://192.168.x.y (using the LAN IP of your SME box)?