Len,
This can be useful only if the sender@senderdomain is from outside.
But what about insiders ?
They can do many damage in this case.
I wonder why others mail servers can attach something else into the message
properties, like yahoo does:
----------------------------------------------------------------------
Received: from imgate.cotel.com.ar [192.168.0.20] by cotel.com.ar
(SMTPD32-6.06) id AA3A1E250082; Tue, 18 Sep 2001 10:20:58 -0300
Received: from web14007.mail.yahoo.com (web14007.mail.yahoo.com
[216.136.175.123])
by imgate.cotel.com.ar (Postfix) with SMTP id 87C6BB597
for <[EMAIL PROTECTED]>; Tue, 18 Sep 2001 10:20:47 -0300 (ART)
Message-ID: <[EMAIL PROTECTED]>
Received: from [200.16.193.16] by web14007.mail.yahoo.com via HTTP; Tue, 18
Sep 2001 08:20:26 CDT
Date: Tue, 18 Sep 2001 08:20:26 -0500 (CDT)
From: =?iso-8859-1?q?Benjamin=20Franklin?= <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: test
To: [EMAIL PROTECTED]
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
X-RCPT-TO: <[EMAIL PROTECTED]>
X-UIDL: 300331024
Status: U
--------------------------------------------------------------------------
As you can see, the 'From:' line, has not only Benjamin Franklin, but the
real mailbox!
And the 'Reply-To:' is whatever you want. sure.
Any ideas ?
Andres
PD: Is the list working ? only your mail since mine ( 10.57 my time ) at
IMail Forum ( more than 4 hours )
>
> >I wonder if someone got this problem.
> >A normal user, set up in his Outlook Express account *another*
> real name (
> >ie: George Bush ) and *another* email address ( ie:
> [EMAIL PROTECTED] ).
> >This user, by using this own username/password ( ie: flintstone/PssWrd )
> >can, now, send mails like George Bush, and if i see the property of the
> >message, it's showing all data related to George Bush, not his *real*
> >username/email address ( [EMAIL PROTECTED] ).
> >
> >How can I avoid that ?
>
> you can't stop any user from using any mail personality in their
> mail program.
>
> I don't know of any aspect of Imail that can limit users to specific
> senders names, and Imail�s filter works only on incoming mail.
>
> But on your IMGate, you can block in smtpd_client_restrictions with the
> no_send.map file, which blocks by sender@senderdomain. You users
> won't be
> able to send msgs through IMGate as [EMAIL PROTECTED]
>
> The big drawback is that if sheriff "dead or alive" shrub himself
> wants to
> sent mail to your users, he will be blocked, too.
>
> Len
>
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