message d'erreur bizarre

[Patrick CAO HUU THIEN <adresse@cachée>]

boujour,

En tant que proprietaire de liste je recois des messages d'erreurs. Dans le 
principe c'est normal mais la ou il y a un probleme c'est lorsque l'erreur 
conserne une adresse d'une personne NON abonnée.

avez vous une idee ?

Voici le message:

The original message was received at Fri, 17 Sep 1999 07:21:28 -0400 (EDT)
from mailhub2.isdnet.net [195.154.209.22]


*** ATTENTION ***

Your e-mail is being returned to you because there was a problem with its
delivery.  The AOL address which was undeliverable is listed in the section
labeled: "----- The following addresses had permanent fatal errors -----".

The reason your mail is being returned to you is listed in the section
labeled: "----- Transcript of Session Follows -----".

The line beginning with "<<<" describes the specific reason your e-mail could
not be delivered.  The next line contains a second error message which is a
general translation for other e-mail servers.

Please direct further questions regarding this message to your e-mail
administrator.

--AOL Postmaster



   ----- The following addresses had permanent fatal errors -----
<adresse@cachée>

   ----- Transcript of session follows -----
... while talking to air-za03.mail.aol.com.:
>>> RCPT To:<adresse@cachée>
<<< 550 MAILBOX NOT FOUND
550 <adresse@cachée>... User unknown
Reporting-MTA: dns; rly-za03.mx.aol.com
Arrival-Date: Fri, 17 Sep 1999 07:21:28 -0400 (EDT)

(...)
----------------------------------ooo000ooo-----------------------------------
                            Patrick CAO HUU THIEN
                  ingénieur informaticien "la main à la pâte"
                         mailto:adresse@cachée
                            http://www.inrp.fr/lamap/
----------------------------------ooo000ooo-----------------------------------