[Exim] NSOT: rejecting e-mail from lists

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Szerző: Leonardo Boselli
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Címzett: exim-users
Tárgy: [Exim] NSOT: rejecting e-mail from lists
One e/mail provider has recently set a strange policy, refusing e
mail from their own users, unless they come from their own servers.
This seems however apply to any message. Inclusive those form
lists.
One person [jore] wrote asking why she did not receive messages
in the list from another one [maria] .
J just got the message from my archive and bounced her.
surprise: for every message come a bounce message as follows.
Is this way to work correct ?
this would forbide using of e-mail lists for such people, since when
sending from the listserver the message arrives with an internal
from message, so authentication is required and so message
refused.
*I had to bounce the message not keeping original address, but as
an enclosure in a my message ...)
Here a partial bounce message:

******************************************************************************
A message that you sent could not be delivered to one or more of
its recipients. This is a permanent error. The following address(es)
failed:

  jose@???
    SMTP error from remote mailer after end of data:
    host smtp.katamail.ksmail.it [194.153.172.230]:
    553 Authentication is required to send mail as
    <maria@???>


------ This is a copy of the message, including all the headers. ------

Return-path: <leo@???>
Received: from (meridiano2) [194.185.97.9]
by dipolo.dicea.unifi.it with asmtp (Exim 3.33 #1 (Debian))
id 17AFPT-0007Lu-00; Tue, 21 May 2002 21:35:06 +0200
Resent-from: "Leonardo Boselli" <leo@???>
Resent-to: jose@???
Resent-date: Tue, 21 May 2002 21:38:16 +0200
************************************************************************
what happened ? these people refuse
Leonardo Boselli
nucleo informatico e telematico
Dipartimento Ingegneria Civile
Universita` di Firenze
V. S. Marta 3 - I-50139 Firenze
tel +39()0554796431
cel +39 3488605348
fax +39()055495333
http://www.dicea.unifi.it/~leo