I asked the same and Vietse Venema answer this: Postfix 3.0 and later:
/etc/postfix/main.cf:
smtpd_sender_restrictions =
permit_mynetworks
permit_sasl_authenticated
check_sender_access inline:{
{ example.com = REJECT local sender from unauthorized
client }
{ other.example = REJECT local sender from unauthorized
client }
} Instead of example.com and other.example, specify your email domains. Note: this breaks email from remote mail forwarders or from remote distribution lists that don't reset the sender address. this worked perfectly for me ************************************************************************************************* Este mensaje y todos los archivos adjuntos son confidenciales y de uso exclusivo por parte de su/sus destinatario/s. Si usted ha recibido este mensaje por error, le agradecemos que lo notifique inmediatamente al remitente y destruya el mensaje. Queda prohibida cualquier modificación, edición, uso o divulgación no autorizados. El Emisor no se hace responsable de este mensaje si ha sido modificado, distorsionado, falsificado, infectado por un virus o editado o difundido sin autorización. *********************************************************************************************** This message and any attachments are confidential and intended for the named addressee(s) only. If you have received this message in error, please notify immediately the sender, then delete the message. Any unauthorized modification, edition, use or dissemination is prohibited. The sender shall not be liable for this message if it has been modified, altered, falsified, infected by a virus or even edited or disseminated without authorization. *********************************************************************************************** El 07/02/2019 a las 2:44, Ruben Safir escribió:
I got this email, which I thought I set up postfix to block
>From ru...@mrbrklyn.com Wed Feb 6 06:26:12 2019
Return-Path: <ru...@mrbrklyn.com>
X-Original-To: ru...@mrbrklyn.com
Delivered-To: ru...@mrbrklyn.com
Received: from mail.isentia.asia (mail.mediabanc.ws [203.223.144.88])
by mrbrklyn.com (Postfix) with ESMTP id BE463161132
for <ru...@mrbrklyn.com>; Wed, 6 Feb 2019 06:25:50 -0500 (EST)
Received: from fixed-187-189-92-126.totalplay.net (187.189.92.126) by
mail.mediabanc.ws (10.61.3.33) with Microsoft SMTP Server id
8.1.240.5; Wed,
6 Feb 2019 15:36:09 +0800
From: BSM <ru...@mrbrklyn.com>
To: ru...@mrbrklyn.com
Subject: Directorio Empresarial Mexicano 2019
Date: Wed, 6 Feb 2019 01:40:06 -0600
Message-ID: <20190206014006.8f2d6192f98f7...@mrbrklyn.com>
MIME-Version: 1.0
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
X-UID: 55347
Status: RO
Content-Length: 36872
Lines: 561
This is addressed as me in the From line and came from outside my
local network
I want domain being accepted From my domain only is it comes from within
the local network
smime.p7s
Description: Firma criptográfica S/MIME
