SSLでIEが古い場合にapacheでの設定を参考に
http://kazu-360.cocolog-nifty.com/blog/2007/08/apache_mod_ssli_7c51.html
http://d.hatena.ne.jp/hogem/20081111/1226334387
BrowserMatch "MSIE [1-4]" \ nokeepalive ssl-unclean-shutdown \ downgrade-1.0 force-response-1.0 BrowserMatch "MSIE [5-9]" \ ssl-unclean-shutdown