Is redhat being filtered by AOL

[Robert Canary]

Every time I post to the list I also get one of these:
(cut and paste headers from return receipt)

Hi. This is the qmail-send program at mail.trueswitch.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<esayadevi03 at aol.com>:
64.12.137.184 failed after I sent the message.
Remote host said: 421-:  (DYN:T1) 
http://postmaster.info.aol.com/errors/421dynt1.html
421 SERVICE NOT AVAILABLE
I'm not going to try again; this message has been in the queue too long.

--- Below this line is a copy of the message.

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Date: Wed, 24 Jan 2007 17:21:18 -0600
From: Robert Canary <rwcanary at ocdirect.net>
Subject: RHEL4 has no kernel-source rpm?????
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