发国外邮件总是超时而断线，是为什么？？
我公司用铁通的光纤专线，发国外邮件总是超时而断线，前几天换了个IP可正常用了十几天，现在又开始老时连上后传输了几K后就不动了，我现在一般是传了8K就停了，到最后退信提示都是连接超时断开。有时小邮件又能正常发到对方邮箱。应该不是IP被对方屏蔽，这到底是什么原因？？？各位有没碰到这种事情，铁通查了也找不到原因，会不会是铁通出口带宽的问题呢？昨天铁通给了几个IP测试，发现有一个IP不是从广东出口的，发送速度很快，也其他几个（包括我现在用的IP）都是从广东出去的，速度都很慢，要不就传不了。
--- Session Transcript ---
> >Parsing Message <c:\MDAEMON\Remoteq\pd10000008009.msg>
> >From: success@darson.com
> >To: Earlene.Henry@successappl.com
> >Subject: Re: Z06/178(Re: P.O prices)
> >Message-ID: <006601c6d157$79018320$1f00a8c0@darson.local>
> >Route slip host: successappl.com
> >Route slip port: 25
> >MX-record resolution of in progress (DNS Server:
> 222.47.62.22)...
> >P=060 D=successappl.com TTL=(62) MX=
> >P=010 D=successappl.com TTL=(62) MX=
> {66.9.21.6}
> >Attempting MX: P=010 D=successappl.com TTL=(62)
> MX= {66.9.21.6}
> >Attempting SMTP connection to
> >Waiting for socket connection...
> >Socket connection established (61.234.212.50 : 1787 -> 66.9.21.6 :
> 25)
> >Waiting for protocol initiation...
> ><-- 220 s3gm73a2.successappl.com SMTP; Tue, 05 Sep 2006 22:41:23
> -0400
> >--> EHLO leedarson.com
> ><-- 250 s3gm73a2.successappl.com Hello
> >--> MAIL From:<success@darson.com>
> ><-- 250 <success@darson.com>... Sender ok
> >--> RCPT To:<Earlene.Henry@successappl.com>
> ><-- 250 <Earlene.Henry@successappl.com>... Recipient ok
> >--> RCPT To:<Eva_Peguero/success@successappl.com>
> ><-- 250 <Eva_Peguero/success@successappl.com>... Recipient ok
> >--> RCPT To:<Marc_Setton/success@successappl.com>
> ><-- 250 <Marc_Setton/success@successappl.com>... Recipient ok
> >--> DATA
> ><-- 354 Enter mail, end with "." on a line by itself
> >Sending <E:\ALTN\MDAEMON\Remoteq\pd10000008009.msg> to
> >Connection timed out!
> >This message is 65 minutes old; it has 0 minutes left in this queue
> >Primary queue lifetime exceeded; message placed in retry queue
> > --- End Transcript ---
> > : Message contains file attachments 好像是 MDaemon 的老問題..
經常出現醬子的. ><"
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