hello, i am getting this log in my /var/log/httpd/access_log at every 30-40 min. interval ..pls explain/advice about these and what is "401, 403 , 406 " in log. 72.x.y.z - - [24/Sep/2007:19:20:30 +0530] "HEAD /restricted/register.html HTTP/1.1" 401 - "" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1" 122.x.y.z - - [24/Sep/2007:19:46:22 +0530] "CONNECT mailc.x.y.z:25 HTTP/1.0" 403 403 "-" "-" 122.x.y.z - - [24/Sep/2007:20:47:52 +0530] "CONNECT mailc.x.y.z:25 HTTP/1.0" 403 406 "-" "-" thanks
Take a look here to learn more about the status codes: http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
