ezmlm warning

Hi! This is the ezmlm program. I'm managing the
list@securiteam.com mailing list.

I'm working for my owner, who can be reached
at list-owner@securiteam.com.

Messages to you from the list mailing list seem to
have been bouncing. I've attached a copy of the first bounce
message I received.

If this message bounces too, I will send you a probe. If the probe bounces,
I will remove your address from the list mailing list,
without further notice.

I've kept a list of which messages from the list mailing list have
bounced from your address.

Copies of these messages may be in the archive.

To retrieve a set of messages 123-145 (a maximum of 100 per request),
send an empty message to:
<list-get.123_145@securiteam.com>

To receive a subject and author list for the last 100 or so messages,
send an empty message to:
<list-index@securiteam.com>

Here are the message numbers:

7296

--- Enclosed is a copy of the bounce message I received.

Return-Path: <>
Received: (qmail 19941 invoked for bounce); 26 Dec 2007 00:43:26 -0000
Date: 26 Dec 2007 00:43:26 -0000
From: MAILER-DAEMON@houseofcards.securiteam.com
To: list-return-7296-@securiteam.com
Subject: failure notice

Hi. This is the qmail-send program at houseofcards.securiteam.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.

<security.world@gmail.com>:
72.14.221.114 failed after I sent the message.
Remote host said: 552 5.7.0 Illegal Attachment l12si7659346fgb