Warning: could not send message for past 4 hours

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** THIS IS A WARNING MESSAGE ONLY **
** YOU DO NOT NEED TO RESEND YOUR MESSAGE **
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The original message was received at Wed, 12 Sep 2007 19:00:50 -0800
from localhost [127.0.0.1]

----- Transcript of session follows -----
451 4.4.1 reply: read error from mail.pluth.cn.
<qwc@pluth.cn>... Deferred: Connection timed out with mail.pluth.cn.
Warning: message still undelivered after 4 hours
Will keep trying until message is 5 days old