This is the Postfix program at host darksleep.com.

I'm sorry to have to inform you that your message could not be
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                        The Postfix program

<foobar@aol.com>: host mailin-01.mx.aol.com[64.12.137.184] refused to talk to
    me: 554- (RTR:CH)  http://postmaster.info.aol.com/errors/554rtrch.html 554
    Connecting IP: 66.45.34.102

[-- Attachment #2: Delivery report --]
[-- Type: message/delivery-status, Encoding: 7bit, Size: 0.4K --]

Reporting-MTA: dns; darksleep.com
X-Postfix-Queue-ID: B2AC69B77F
X-Postfix-Sender: rfc822; puff@darksleep.com
Arrival-Date: Thu, 26 Oct 2006 15:29:52 -0400 (EDT)

Final-Recipient: rfc822; peblock@aol.com
Action: failed
Status: 4.0.0
Diagnostic-Code: X-Postfix; host mailin-01.mx.aol.com[64.12.137.184] refused to
    talk to me: 554- (RTR:CH)
    http://postmaster.info.aol.com/errors/554rtrch.html 554  Connecting IP:
    66.45.34.102

[-- Attachment #3: Undelivered Message --]
[-- Type: message/rfc822, Encoding: 7bit, Size: 1.7K --]

To: etc.....