关于通信

htx_80

我公司有一代理商在日本，他们发过的邮件经常我公司收不到

退信如下
From: MAILER-DAEMON@mtgw6.ymc.ne.jp [mailto:MAILER-DAEMON@mtgw6.ymc.ne.jp]
Sent: Tuesday, November 03, 2009 6:51 AM
To: exp@yscexpress.com
Subject: failure notice

Hi. This is the qmail-send program at mtgw6.ymc.ne.jp.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<xxxxx@xxxxx.com>:
Sorry, I wasn't able to establish an SMTP connection. (#4.4.1) I'm not going
to try again; this message has been in the queue too long.

--- Below this line is a copy of the mail header.

Return-Path: <exp@yscexpress.com>
Received: (qmail 29570 invoked from network); 30 Oct 2009 15:44:17 +0900
Received: from vcgw2w.ymc.ne.jp (210.175.91.253)
by mtgw6.ymc.ne.jp with SMTP; 30 Oct 2009 15:44:17 +0900
Received: (qmail 9558 invoked by uid 0); 30 Oct 2009 15:44:13 +0900
Received: from yscexpress.com (211.16.214.69)
by vcgw2w.ymc.ne.jp with QMQP; 30 Oct 2009 15:44:12 +0900
Received: from hdofb-15p1-65.ppp11.odn.ad.jp (HELO yscildPC)
(exp@210.231.58.65)
by yscexpress.com with SMTP; 30 Oct 2009 15:44:14 +0900
From: "exp" <exp@yscexpress.com>
To: "emma_zhou" <xxxxx@xxxxxx.com>
Subject: FW: B/L DOC: JFL-UKB-SHA-0910-0145
Date: Fri, 30 Oct 2009 15:44:09 +0900
Message-ID: <24311905DAA047A6A5E21547BEF11A57@yscildPC>
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="----=_NextPart_000_0165_01CA5977.D35DF190"
X-Mailer: Microsoft Office Outlook 11
Thread-Index: AcpZGy+l5PK3QsegTq2eOeHWdECungAER2fw
X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18005



请问是什么原因

yinjie

I wasn't able to establish an SMTP connection