由於衆所周知的原因， google無法訪問， 一直使用的smarthost也無法工作， 簡單一些還可以通過IP地址來訪問， 可以通過如下方式來尋找相應的IP地址：
1， 使用公共的web ping工具找到Google.com ip；
工具有不少，如StartPing或APM Cloud Monitor， 輸入Google.com, 得出如下結果，
Region Country City Result min. rrt avg. rrt max. rrt IP
Europe Italy Milan Ok 0.2 0.3 0.3 173.194.116.4
Europe Latvia Riga Ok 10.4 10.5 10.6 173.194.32.33
Europe Lithuania Siauliai Ok 3.2 3.2 3.3 84.15.64.37
North America United States Philadelphia Ok 0.2 0.2 0.2 <span style="color:#ff0000;">4.31.115.251</span>
North America United States Phoenix Ok 21.4 21.5 21.6 74.125.224.98
North America United States Piscataway Ok 1.4 1.5 1.5 74.125.226.38
North America United States Portland Ok 3.8 4.2 4.9 173.194.33.99
North America United States Sacramento Ok 0.9 1 1.3 74.125.224.167
North America United States Salem Ok 21.1 21.4 21.8 74.125.22.113
North America United States Salt Lake City Ok 18.9 18.9 19 74.125.224.65
North America United States San Antonio Ok 37.2 37.4 38.2 173.194.115.104
North America United States San Diego Ok 14.8 14.8 14.9 74.125.239.130
North America United States San Francisco Ok 2.3 2.3 2.4 74.125.239.39
North America United States San Jose Ok 1.5 1.7 2.8 74.125.239.133
North America United States Seattle Ok 0.5 0.6 0.8 173.194.33.32
North America United States South Bend Ok 3.5 3.6 3.6 74.125.225.33
North America United States St Louis Ok 13.8 13.8 13.9 74.125.225.0
North America United States Tampa Ok 12.2 12.2 12.2 74.125.196.100
North America United States Toledo Ok 8.6 8.8 9.1 74.125.225.96
North America United States Washington Ok 2.2 2.3 2.8 74.125.228.4
South America Argentina Buenos Aires Ok 2 3 5.5 173.194.42.69
South America Brazil Joao Pessoa Ok 2.7 2.8 3.2 177.159.237.30
South America Brazil Sao Paulo Ok 147.3 147.4 147.4 74.125.226.41
South America Chile Santiago Ok 2 2 2 64.233.186.1002， 找到可用IP， 最簡單（笨）的方法將最後一列中的IP地址逐個直接輸入瀏覽器， 下面就是找到一些可用的，
4.31.115.251 （親測可用, 2014.08.18）
173.194.13.13 （親測可用, 2014.08.18）
等。
ps：下面是一些其他的方法可供參考：