退信問題求教？！

[gramy]

素大您好：

今天寄信時被退信，底下是退信訊息，

想請問一下是什麼狀況？
還是要改用isp的smtp去轉送比較好？

感謝~@@"
=========================================
Reporting-MTA: dns; mx8.ttn.net
Arrival-Date: Mon, 15 Oct 2007 11:10:25 +0800

Final-Recipient: RFC822; service@netgaze.ttn.net
Action: failed
Status: 5.3.5
Diagnostic-Code: SMTP; 553 5.3.5 system config error
Last-Attempt-Date: Mon, 15 Oct 2007 11:10:30 +0800

=========================================
寄件者: Mail Delivery Subsystem [mailto:MAILER-DAEMON@mx8.ttn.net]
寄件日期: 2007年10月15日 上午 11:11
收件者: gramy@gemtw.com; postmaster@mx8.ttn.net
主旨: Returned mail: see transcript for details

The original message was received at Mon, 15 Oct 2007 11:10:25 +0800 from [10.145.0.253]

----- The following addresses had permanent fatal errors ----- <service>
(reason: 553 5.3.5 system config error)

----- Transcript of session follows -----
553 5.3.5 netgaze.ttn.net.mx.pro.ttn.net. config error: mail loops back to me (MX problem?)
554 5.3.5 Local configuration error
=========================================

[gramy]

素大您好：

可能不用研究了，
因為後來我用mail2000的信箱寄「service@netgaze.ttn.net」，也是被退信，
應該是ttn本身的問題，
我改寄ttn另一個客服信箱「service@ttn.com.tw」就正常了，@@"

不好意思，打擾了！感謝~
=============================
有在google上查，但應該是與雷電沒關係，@@"
http://cha.homeip.net/blog/archives/2004/12/sendmail_localh.html