Got hung up in a recent changeover of XEmacs secondary MXs, it seems.
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From: Mail Delivery System <Mailer-Daemon(a)mejsel.josefsson.org>
Date: Feb 1, 2008 6:19 PM
Subject: Mail delivery failed: returning message to sender
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[220.127.116.11]: 451 4.7.1 Greylisting in action,
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