Email: Delivery Status Notification (Failure) messages

[wwalker@]

I have all of my catchalls set to discard.
So mailenable sends them all to a trash account.
Every day now I open my admin email to find hundreds of "Delivery Status Notification (Failure)" messages.
If it is discarding messages, then why would the system be sending messages back to the spam originator? Ot is it?

all of my clients are also getting "Delivery Status Notification (Failure)" messages.

I think that I am over my limit of daily relays because something is bouncing the messages.
For the domain listed below I have set:
Mail to nonexistent user: Discard
and I also set:
ME/servers/localhost/connectors/SMTPorperties/security to Disable all catchalls

Here is the content of one of the messages...
BTW - "emily" is not a valid email address for the domain nacrealty.com

MailEnable: Message delivery has been delayed.

Message is waiting at walkerhosting.secureserver.net for delivery to k2smtpout.secureserver.net.

Reason: Mail Server for could not accept your email at this time. MailEnable will keep trying to deliver this message and will notify you of any progress.


Message headers follow:

Received: from ([83.44.59.159]) for <[email protected]> with MailEnable Catch-All Filter; Tue, 22 Aug 2006 19:09:17 -0600
Received: from bbbsbc.org ([83.44.59.159]) by walkerhosting.secureserver.net with MailEnable ESMTP; Tue, 22 Aug 2006 19:09:16 -0600
Received: by 192.168.238.161 with SMTP id NsRCGgDn;
for <[email protected]>; Tue, 22 Aug 2006 18:09:09 -0700
Message-ID: <000001c6c650$bcf194b0$a1eea8c0@btcl>
Reply-To: "Tlaloc Lawver" <[email protected]>
From: "Tlaloc Lawver" <[email protected]>
To: [email protected]
Subject: Re: new ri
Date: Tue, 22 Aug 2006 18:09:09 -0700
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_0001_01C6C616.1092BCB0"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2800.1106
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106