该死的技术，真不该做这行。
配个虚拟主机，但只有第一个生效。感觉也没错呀，一定是其实那个变量值没设对。该死的技术，快tm气吐血了。
serveradmin webmaster@jicheke.com
  documentroot /var/www/sns/
  servername www.a.com
  adddefaultcharset utf-8
  logformat %h %l %u %t \%r\ %>s %b \%{referer}i\ \%{user-agent}i\ %i %o common1
  errorlog /var/httpd/log/jicheke-error_log
  customlog |/usr/sbin/rotatelogs /var/httpd/log/jicheke-access_%y%m%d.log 86400 common1
allowoverride all
  order deny,allow
  deny from all
  allow from all
  directoryindex index.php index.html
rewriteengine on
serveradmin jp214@126.com
 documentroot /var/www/jianping/
  servername www.b.www
  adddefaultcharset utf-8
  logformat %h %l %u %t \%r\ %>s %b \%{referer}i\ \%{user-agent}i\ %i %o common1
  errorlog /var/httpd/log/pingzi-error_log
  customlog |/usr/sbin/rotatelogs /var/httpd/log/pingzi-access_%y%m%d.log 86400 common1
allowoverride all
  order deny,allow
  deny from all
  allow from all
  directoryindex index.php index.html
rewriteengine on
------解决方案--------------------
ping 不行的网址 看有解析到那台服务器上了没
没配置过 但
servername www.b.www 是随便个例子 还是？