Something is configured wrong on mozilla.org. If you from a unix command line performs the following command: HEAD mozilla.org you get: 404 Not found Connection: close Date: Tue, 12 Jun 2001 20:46:15 GMT Server: Netscape-Enterprise/3.6 Content-Length: 207 Content-Type: text/html Client-Date: Tue, 12 Jun 2001 20:45:12 GMT Client-Peer: 188.8.131.52:80 If you do the same on netscape.com HEAD netscape.com 200 OK Connection: close Date: Tue, 12 Jun 2001 20:46:22 GMT Server: Netscape-Enterprise/4.1 Content-Length: 0 Content-Type: text/html Client-Date: Tue, 12 Jun 2001 20:46:20 GMT Client-Peer: 184.108.40.206:80 Set-Cookie: UIDC=220.127.116.11:0992378783:399753;domain=.netscape.com;path=/;expires=31- Dec-2010 23:59:59 GM there nothing wrong with browsing the site, it just the web server that's returning a wrong HTTP status code. Btw: the same is true for www.mozilla.org HEAD http://bugzilla.mozilla.org works just fine, returning "200 OK"
This is a side effect of having "Directory Indexing" turned to off within the Netscape Enterprise Server 3.6. If you do a "HEAD" of a specific file, i.e. "HEAD mozilla.org/index.html" you will get a successful return code and actual data returned. We usually prefer to leave the directory indexing feature turned off so people can't just generically troll through the web site and find all the content. I think in NES 4.1 you get a correct return code in this instance, though. I'll verify that and then see about upgrading install base for www.mozilla.org.
Please note that indexing is turned off on purpose and before touching it please make sure security os covered: http://bugzilla.mozilla.org/show_bug.cgi?id=41158
*** This bug has been marked as a duplicate of 107166 ***
This one is not resolved, the error still exists!
NES6 correctly returns a 200 in reply to HEAD / HTTP/1.0