help! 551 User not local; please try

andyyuyi

请教各位：我公司有几位USER发送到国外（比如西班牙、韩国、巴西等）经常有退信信息：551 User not local; please try <forward-path；但有时一两次又不会被退。就几个USER会出现这种情况，其他USER又不会。而且是带附件的是一定会被退而不带附件的有时可以发送成功。请各位帮忙看看，望不啬赐教。谢谢！<br>

andyyuyi

以下分别为发送不成功和发送成功的日志对比。请那位帮帮忙。先谢了！<br>
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A new TCP/IP SMTP connection has been made to host 195.235.39.34 (for grupothyssenkrupp.com). Logfile&#58; L0000000.LOG <br>
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The following message could not be delivered to <alvaro.caffarena@grupothyssenkrupp.com>. The destination server reported: 551 User not local; please try <forward-path> From: <sabina@mydomain.com> Subject: FW: Shopping Florianópolis II - SC , Brazil No.90 00 2005 0257.02 W <br>
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Delivery of message <3C561BFAE7935D419515959EC7173F99018599C4@tecsvr1.GTE> from <sabina@TECZS.com> in temporary file P109VPA6 was attempted to host(s) 195.235.39.34 (for grupothyssenkrupp.com) with 0 recipients delivered and 1 undeliverable. <br>
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A new TCP/IP SMTP connection has been made to host 195.235.39.34 (for grupothyssenkrupp.com). Logfile&#58; L0000000.LOG <br>
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Delivery of message <3C561BFAE7935D419515959EC7173F9901859A0D@tecsvr1.GTE> from <AndyYu@mydomain.com> in temporary file P109VPH9 was attempted to host(s) 195.235.39.34 (for grupothyssenkrupp.com) with 1 recipients delivered and 0 undeliverable. <br>