On 10/9/2013 3:03 PM, Stefano Gatto wrote:
> Hi all
> I'm trying to configure postfix 2.7.1 to protect internal mailing list with
> the restriction classes as per
> http://www.postfix.org/RESTRICTION_CLASS_README.html#internal
> Example 
> /etc/postfix/main.cf:
>     smtpd_recipient_restrictions =
>         ...
>         check_recipient_access hash:/etc/postfix/protected_destinations
>         ...the usual stuff...
> 
>     smtpd_restriction_classes = insiders_only
>     insiders_only = check_sender_access hash:/etc/postfix/insiders, reject
> 
> Everything works as expected, If a client not in insider.db  try to send a
> mail with the list in filed to: the mail bounce back to sender.
> The problem arise when someone send an email to a real mailbox in field TO:
> and to the list in field CC: 
> In that situation the mail server forwards the email to everyone in the
> list.
> Can someone help me to reconfigure postfix not to forward to the list
> address even if is in the field CC:?
> Tya Stefano
> 


Postfix never makes delivery decisions based on headers, so you
should recheck your evidence.

Note that a multi-recipient message that includes both banned and
permitted recipients will only block the banned recipients.  The
permitted recipients will still receive the message and the headers
may make it *appear* it was delivered to the banned recipients.

Also, you seem to use "sender" and "client" interchangeably above.
Maybe just a typo, but be sure you understand the difference.

If you need more help, you'll need to show us exactly what you've
configured and logs of the undesired behavior.
http://www.postfix.org/DEBUG_README.html#mail




  -- Noel Jones

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