Can someone decipher why we might be getting a bounce like this?  We've received several in the last few days.

We do have one list member at iinet.net.au but I can't figure out why we get so many addresses back in the bounce,
none of them hers.  Most in this example appear to be attempted spam delivery addresses at other domains, which
seem to exist but which do not appear on our list.

Note I changed the addresses to xxxxx below so they all look the same, but in fact each one was slightly different --
"adiiaf", "adiil", etc.

Thanks for any insights.

================================================================

The enclosed message has been identified as a delivery error for the
GUATEMALA-ADOPT list because it was sent to
[log in to unmask]

------------------------------ Message in error -------------------------------
Received: from mail.iinet.net.au (203.59.3.37) by maelstrom.stjohns.edu (LSMTP
          for OpenVMS v1.1a) with SMTP id <[log in to unmask]>;
          Thu, 21 Mar 2002 8:24:46 -0500
Received: (qmail 13510 invoked for bounce); 21 Mar 2002 13:24:18 -0000
Date: 21 Mar 2002 13:24:18 -0000
From: [log in to unmask]
To: [log in to unmask]
Subject: failure notice

Hi. This is the qmail-send program at mail.iinet.net.au.
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.

<[log in to unmask]>:
63.211.86.9 does not like recipient.
Remote host said: 550 5.1.1 <[log in to unmask]>... User unknown
Giving up on 63.211.86.9.

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
209.228.4.171 failed after I sent the message.
Remote host said: 554 Your message has been returned by our UCE/spam filter. (#5.7.1)

<[log in to unmask]>:
213.171.192.176 does not like recipient.
Remote host said: 551 Bad Recipient
Giving up on 213.171.192.176.

<[log in to unmask]>:
195.50.227.10 does not like recipient.
Remote host said: 550 <[log in to unmask]> is not a valid mailbox
Giving up on 195.50.227.10.

<[log in to unmask]>:
216.126.227.37 does not like recipient.
Remote host said: 550 unknown user <[log in to unmask]>
Giving up on 216.126.227.37.

<[log in to unmask]>:
202.104.32.246 does not like recipient.
Remote host said: 550 <whitenight:21cn_net>, No such user.
Giving up on 202.104.32.246.

<[log in to unmask]>:
216.126.227.37 does not like recipient.
Remote host said: 550 unknown user <[log in to unmask]>
Giving up on 216.126.227.37.

<[log in to unmask]>:
202.104.32.232 does not like recipient.
Remote host said: 550 <adjoe>, No such user.
Giving up on 202.104.32.232.

<[log in to unmask]>:
202.104.32.232 does not like recipient.
Remote host said: 550 <adjoin>, No such user.
Giving up on 202.104.32.232.