求助～～邮件发不出去，望高手指点～～

tnndbazi

The attached message had PERMANENT fatal delivery errors!<br>
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After one or more unsuccessful delivery attempts the attached message has been removed from the mail queue on this server. The number and frequency of delivery attempts are determined by local configuration parameters.<br>
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YOUR MESSAGE WAS NOT DELIVERED TO ONE OR MORE RECIPIENTS!<br>
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Failed address: STEVE@ENVOY_FREIGHT.CO.UK<br>
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--- Session Transcript ---<br>Sun 2006-05-28 19:05:24: Parsing Message <xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\pd90000001269.msg><br>Sun 2006-05-28 19:05:24: From: kteng.sha@fcclogistics.com Sun 2006-05-28 19:05:24: To: STEVE@ENVOY_FREIGHT.CO.UK Sun 2006-05-28 19:05:24: Subject: RE:TELEX RELEASE FOR CNEE SATKARTAR UK<br>
(6408983)<br>Sun 2006-05-28 19:05:24: Message-ID:<br>Sun 2006-05-28 19:05:24: MX-record resolution of [ENVOY_FREIGHT.CO.UK] in progress (DNS Server: 202.96.209.5)...<br>Sun 2006-05-28 19:05:25: Name server reports domain name unknown Sun 2006-05-28 19:05:25: Attempting SMTP connection to [ENVOY_FREIGHT.CO.UK<br>
: 25]<br>Sun 2006-05-28 19:05:25: A-record resolution of [ENVOY_FREIGHT.CO.UK] in progress (DNS Server: 202.96.209.5)...<br>Sun 2006-05-28 19:05:25: Name server reports domain name unknown Sun 2006-05-28 19:05:25: This message is 5 days old; it has 0 days left to get delivered<br>
--- End Transcript ---<br>
: Message contains [1] file attachments<br>
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PS：邮件地址是对的<br>
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望高手指点······谢谢了

stdmis

Name server reports domain name unknown