Fwd: Mail delivery failed: returning message to sender

Got hung up in a recent changeover of XEmacs secondary MXs, it seems. ---------- Forwarded message ---------- From: Mail Delivery System <Mailer-Daemon(a)mejsel.josefsson.org&gt; Date: Feb 1, 2008 6:19 PM Subject: Mail delivery failed: returning message to sender To: unwelcome-guest(a)alioth.debian.org This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: xemacs-patches(a)xemacs.org SMTP error from remote mail server after RCPT TO:< xemacs-patches(a)xemacs.org&gt;: host mail.xemacs.org [207.172.156.133]: 451 4.7.1 Greylisting in action, please come back later: retry timeout exceeded ------ This is a copy of the message, including all the headers. ------