Hi I'm experiencing a super weird problem.
Whenever I post links to my website on Facebook, they come up as Forbidden.
The site itself works great and I have no seen this when linking on other sites.
Could this be a server misconfiguration? Any thoughts on where to look?
here's some Info:
I have a dedicated server running WHM 11.25.0
i have 2 sites hosted here using cPanel 11.25.0
the error msg:
Forbidden
You don't have permission to access /blog/deepwater-horizon-11/ on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8i DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.offshoreinjuries.com Port 80
UPDATE:
Here is a sample link if it helps. (notice going the linked page directly works fine)
http://www.facebook.com/l.php?u=http%3A%2F%2Fwww.offshoreinjuries.com%2Fblog%2Fdeepwater-horizon-11%2F&h=834ea
UPDATE and ANSWER:
Found the issue and added a complete answer below.
You must have a rule somewhere that reads the HTTP_REFERER and rejects incoming links from Facebook. Seriously. This is what happens between the lines:
telnet www.offshoreinjuries.com 80
HEAD /blog/deepwater-horizon-11/ HTTP/1.1
Host: www.offshoreinjuries.com
HTTP/1.1 200 OK
Date: Fri, 28 May 2010 09:19:45 GMT
Server: Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8i DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635
X-Powered-By: PHP/5.2.12
X-Pingback: http://www.offshoreinjuries.com/blog/xmlrpc.php
Content-Type: text/html; charset=UTF-8
200 OK, good.
telnet www.offshoreinjuries.com 80
HEAD /blog/deepwater-horizon-11/ HTTP/1.1
Host: www.offshoreinjuries.com
Referer: http://www.facebook.com/l.php?u=http%3A%2F%2Fwww.offshoreinjuries.com%2Fblog%2Fdeepwater-horizon-11%2F&h=834ea
HTTP/1.1 403 Forbidden
Date: Fri, 28 May 2010 09:21:04 GMT
Server: Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8i DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635
Content-Type: text/html; charset=iso-8859-1
403 Forbidden, bad.
telnet www.offshoreinjuries.com 80
HEAD /blog/deepwater-horizon-11/ HTTP/1.1
Host: www.offshoreinjuries.com
Referer: http://alvaro.es/
HTTP/1.1 200 OK
Date: Fri, 28 May 2010 09:20:36 GMT
Server: Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8i DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635
X-Powered-By: PHP/5.2.12
X-Pingback: http://www.offshoreinjuries.com/blog/xmlrpc.php
Content-Type: text/html; charset=UTF-8
200 OK again.
Your server is actively rejecting visitors from Facebook.