这段日志是退信日志，请高手们帮助分析分析呀

dandan2k

09:17 09:26 SMTPD(000005F4) Authenticated xiejun@fujitsu-nfcp.com, session treated as local.<br>
09:17 09:26 SMTPD(06A2024C) [218.2.97.130] MAIL FROM: <xiejun@fujitsu-nfcp.com><br>
09:17 09:26 SMTPD(06A2024C) [218.2.97.130] RCPT TO: <gch689570@sina100.com><br>
09:17 09:26 SMTPD(06A2024C) [218.2.97.130] e:\IMail\spool\D3d2c06a2024cb617.SMD 1038011<br>
09:17 09:26 SMTP-(0544010B) processing e:\IMail\spool\Q3d2c06a2024cb617.SMD<br>
09:17 09:26 POP3D (0000014C) logon success for xujie fujitsu-nfcp.com from 218.2.97.130<br>
09:17 09:26 POP3D (0000014c) logoff for xujie R:0, D:0, P:0<br>
09:17 09:26 SMTP-(0544010B) Creating message from Postmaster<br>
09:17 09:26 SMTP-(0554044C) processing e:\IMail\spool\Q0544010bd99d.GSE<br>
09:17 09:26 SMTP-(0544010B) finished e:\IMail\spool\Q3d2c06a2024cb617.SMD status=2<br>
09:17 09:26 SMTP-(0554044C) ldeliver fujitsu-nfcp.com xiejun-main (1) 2536<br>
09:17 09:26 SMTP-(0554044C) finished e:\IMail\spool\Q0544010bd99d.GSE status=1<br>

钉子

请问有什么问题？能否详细说一下？

dandan2k

我们Imail域名是fujitsu-nfcp.com，xiejun@fujitsu-nfcp.com发邮件给gch689570@sina100.com却收到退信通知，unknown host，得到这段日志，请问斑竹是什么问题，还有上次问的日志问题请帮助解答，谢谢！！

钉子

unknown host很有可能是DNS解析不到sina100.com的MX记录，你可以换一个DNS IP试试，根据我刚才查询的结果，对方的MX记录是可以通过的：<br>
<br>
E-mail Tester results for gch689570@sina100.com<br>
Generated by www.DNSstuff.com<br>
<br>
Getting MX record for sina100.com... Got it!<br>
Host Preference IP(s) [Country] sinamx.sina100.com. 10 202.108.37.108 [CN] <br>
--------------------------------------------------------------------------------<br>
Step 1: Try connecting to the following mailserver:<br>sinamx.sina100.com. - 202.108.37.108<br>
<br>
Step 2: If still unsuccessful, queue the E-mail for later delivery.<br>
--------------------------------------------------------------------------------<br>
Trying to connect to all mailservers:<br>sinamx.sina100.com. - 202.108.37.108 [Successful connect: Got a good response [250 ok]]<br>
－－－－－－

dandan2k

那么请问用哪个DNS IP好呢？谢谢！

钉子

你在哪个城市？请询问上网线路提供商（ISP），比如中国电信等。