代理搭好后，使用IP访问没问题，访问域名出错：
The requested URL could not be retrieved
While trying to retrieve the URL: http://www.qq.com/
The following error was encountered:
Unable to determine IP address from host name for www.qq.com
The dnsserver returned:
Refused: The name server refuses to perform the specified operation.
This means that:
The cache was not able to resolve the hostname presented in the URL. Check if the address is correct.
Your cache administrator is webmaster.
Generated Thu, 10 May 2018 09:08:49 GMT by win2003 (squid/2.7.STABLE8)
登录到代理服务器，域名访问没问题。
那么问题就出在squid使用的dns上，文档中写：
# TAG: dns_nameservers
# Use this if you want to specify a list of DNS name servers
# (IP addresses) to use instead of those given in your
# /etc/resolv.conf file.
# On Windows platforms, if no value is specified here or in
# the /etc/resolv.conf file, the list of DNS name servers are
# taken from the Windows registry, both static and dynamic DHCP
# configurations are supported.
#
# Example: dns_nameservers 10.0.0.1 192.172.0.4
#
#Default:
# none
但是谁知道他喵的用的是什么DNS
于是搜了一下国内常用的dns解析服务器
dns_nameservers 114.114.114.114 223.5.5.5
加到squid.conf 中
over