linda

1）首先查看本机缺省解析是否为127.0.0.1
nslookup testflight.apple.com
Addresses:  127.0.0.1
          127.0.0.1

2）再找到正确的testflight.apple.com 域名解析

nslookup testflight.apple.com 8.8.4.4
104.122.27.74

nslookup testflight.apple.com 114.114.114.114
23.77.147.239

nslookup testflight.apple.com 223.6.6.6
23.196.208.228

3）再将DNS服务器切换为能正确解析的DNS服务器，或自定义DNS规则。