В предыдущем сообщение стоит не верный текст запроса.
Правильный такой:

GET http://www.mail.ru/ HTTP/1.0
User-Agent: Opera/9.50 (Windows NT 5.1; U; ru)
Host: www.mail.ru
Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1
Accept-Language: ru-RU,ru;q=0.9,en;q=0.8
Accept-Charset: iso-8859-1, utf-8, utf-16, *;q=0.1
Accept-Encoding: deflate, gzip, x-gzip, identity, *;q=0
Cookie: p=qwgPAEuXngAA; searchuid=1372311222254279; geo_city_id=1441; __utma=56108983.1694011043.1221910876.1223306287.1223404780.18; __utmz=56108983.1223404780.18.14.utmccn=(referral)|utmcsr=win.mail.ru|utmcct=/cgi-bin/readmsg|utmcmd=referral; c56=sCr3SAAAQIAAAAA; c8=9wXxSAAAAAJOCwEAAAAAAAAACbQ4BAAAA; Mpop=1223735334:767c605963586a7519050219091d031b06054f6c5150445e01060601b676e525e5b465f545a5b41185c515f541c404d:egor__bolshakov@mail.ru:; mrcu=13A648D120B2541BB2A0BF597D5C; t=obLD1AAAAAAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAfAAsCwwcA; VID=06FI3M2lkqWZ
Cookie2: $Version=1
Pragma: no-cache
Cache-Control: no-cache
Proxy-Connection: Keep-Alive