可以试试下面这些DNS地址,或直接询问本地ISP服务提供商:
205.252.144.228
202.106.127.1
216.239.32.10
168.95.1.1
202.102.192.68
202.106.0.20
202.96.199.133
202.106.196.115
202.96.96.235
202.103.226.68
202.96.96.236
202.103.224.68
210.162.122.114
解决办法:
1. 在这种情况下更改DNS地址是个好主意(更改DNS成功后必须要重新启动一下WinWebMail服务才能生效)。
2. 输入另一个不同的备用DNS地址,这样当首选DNS暂停服务时,WinWebMail将可以自动使用备用DNS服务器进行目标地址的解析和投递,从而保证通讯畅通。
3. 绝大部分情况下,请不要将局域网内的某台机器IP(如:10.96.0.1)做为DNS服务器地址。
4. 为了确认所选用的DNS可以正常使用,您可以在服务器上ping该DNS地址,当可以ping通时,即可以认为该DNS能够正常工作。请优先选择响应时间最短的DNS,因为这样将可以大幅提高外发邮件的速度。
邮件服务器DNS设置
首选DNS的IP地址:205.252.144.228
被用DNS的IP地址:202.106.127.1
C:/Documents and Settings/Administratorping 205.252.144.228
Pinging 205.252.144.228 with 32 bytes of data:
Reply from 205.252.144.228: bytes=32 time=12ms TTL=242
Reply from 205.252.144.228: bytes=32 time=10ms TTL=242
Reply from 205.252.144.228: bytes=32 time=9ms TTL=242
Reply from 205.252.144.228: bytes=32 time=9ms TTL=242
Ping statistics for 205.252.144.228:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 9ms, Maximum = 12ms, Average = 10ms
C:/Documents and Settings/Administratorping 202.106.127.1
Pinging 202.106.127.1 with 32 bytes of data:
Reply from 202.106.127.1: bytes=32 time=42ms TTL=55
Reply from 202.106.127.1: bytes=32 time=66ms TTL=55
Reply from 202.106.127.1: bytes=32 time=45ms TTL=55
Reply from 202.106.127.1: bytes=32 time=42ms TTL=55
Ping statistics for 202.106.127.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 42ms, Maximum = 66ms, Average = 48ms
虽然都可以ping通,但是半数以上邮件仍然投递超时错误,尤其发送到香港同事的邮件全部退回,错误提示:
无法将您的邮件投递至以下指定地址:
xxx@xxx.com : DNS lookup failed.
无奈只能选择其他DNS,但无一例外,邮件投递超时错误。
最后想到google的DNS服务器8.8.8.8,8.8.4.4。
于是将首选DNS的IP地址改为8.8.4.4,很好很强大,发送邮件全部成功。不谢了,google。
附录:国内各地DNS服务器地址
北京:202.96.199.133 202.96.0.133 202.106.0.20 202.106.148.1 202.97.16.195
上海:202.96.199.132 202.96.199.133 202.96.209.5 202.96.209.133
天津:202.99.96.68 10.10.64.68
广东:202.96.128.143 202.96.128.68 202.96.128.110
深圳:202.96.134.133 202.96.154.8 202.96.154.15
河南:202.102.227.68 202.102.245.12 202.102.224.68
广西:202.96.128.68 202.103.224.68 202.103.225.68
福建:202.101.98.54 202.101.98.55
厦门:202.101.103.55 202.101.103.54
湖南:202.103.0.68 202.103.96.68 202.103.96.112
江苏:202.102.15.162 202.102.29.3 202.102.13.141 202.102.24.35
陕西:202.100.13.11 202.100.4.16
西安:202.100.4.15 202.100.0.68
湖北:202.103.0.68 202.103.0.117 202.103.24.68
(本文来源于图老师网站,更多请访问http://m.tulaoshi.com/fuwuqi/)山东:202.102.154.3 202.102.152.3 202.102.128.68 202.102.134.68
浙江:202.96.102.3 202.96.96.68 202.96.104.18
辽宁:202.98.0.68 202.96.75.68 202.96.75.64 202.96.69.38 202.96.86.18 202.96.86.24
安徽:202.102.192.68 202.102.199.68 10.89.64.5
重庆:61.128.128.68 10.150.0.1
黑龙江:202.97.229.133 202.97.224.68
河北:202.99.160.68 10.17.128.90
保定:202.99.160.68 202.99.166.4
吉林:202.98.5.68 202.98.14.18 202.98.14.19
江西:202.101.224.68 10.117.32.40 202.109.129.2 202.101.240.36
(本文来源于图老师网站,更多请访问http://m.tulaoshi.com/fuwuqi/)山西:202.99.192.68 202.99.198.6
新疆:61.128.97.74 61.128.97.73
贵州:202.98.192.68 10.157.2.15
云南:202.98.96.68 202.98.160.68
四川:202.98.96.68 61.139.2.69
重庆:61.128.128.68 61.128.192.4
成都:202.98.96.68 202.98.96.69
内蒙古:202.99.224.68 10.29.0.2
青海:202.100.128.68 10.184.0.1
海南:202.100.192.68 202.100.199.8
宁夏:202.100.0.68 202.100.96.68
甘肃:202.100.72.13 10.179.64.1
香港:205.252.144.228 208.151.69.65
澳门:202.175.3.8 202.175.3.3