Selamat Sore,


User dapat email dari email yang tidak jelas yang subject berhubungan dengan 
encrypt data.
Pengirim dari email acak dan diterima di user adalah Nama dari alamat email 
sendiri (equity.id).
Contoh : pengirim [email protected]** tapi di from email saya atas nama 
bona.
Selama ini kami blok domain asal email, tetapi selalu berubah-ubah.


A. Bagaimana cara agar email dari luar tidak mengatasnamakan nama pernerima 
email agar dapat otomatis kami reject

jika email dan nama tidak sesuai? 

B. Saat ini semakin banyak user yang terima email seperti ini, dari mana 
mereka dapatkan email yang valid di domain kami pak dan bagaimana 
pencegahannya?




Mohon Bantuannya Pak,



Salam


Bona




contoh header yang diterima user


Return-path: <[email protected]>
Authentication-Results: mail2.equity.id;
        spf=none [email protected];
        dmarc=none header.from=equity.id (no DMARC record);
        iprev=pass policy.iprev=84.54.82.190 (PTR mail.uzbilling.uz);
        iprev=temperror policy.iprev=84.54.82.190 reason="error during lookup" 
(HELO mail.billing.uz);
        iprev=pass policy.iprev=84.54.82.190 (MAIL [email protected])
Received: from mail.billing.uz (mail.billing.uz [84.54.82.190]) by 
mail2.equity.id 
        with ESMTP id md50001408838.msg; Wed, 08 May 2019 14:32:17 +0700
X-Spam-Processed: mail2.equity.id, Wed, 08 May 2019 14:32:17 +0700
        (not processed: message size (264614) exceeds spam filter configured 
max 
size of (204800))
X-MDDNSBL-Result: mail2.equity.id, Wed, 08 May 2019 14:32:17 +0700
        zen.spamhaus.org returned result of 127.0.0.11
X-MDRemoteIP: 84.54.82.190
X-MDHelo: mail.billing.uz
X-MDArrival-Date: Wed, 08 May 2019 14:32:17 +0700
X-Rcpt-To: [email protected]
X-MDRcpt-To: [email protected]
X-Return-Path: [email protected]
X-Envelope-From: [email protected]
X-MDaemon-Deliver-To: [email protected]
X-CAV-Result: skipped - [email protected] is in exclusion list
Received: from localhost (localhost.localdomain [127.0.0.1])
        by mail.billing.uz (Postfix) with ESMTP id 6AE6E98F0A6
        for <[email protected]>; Wed,  8 May 2019 11:46:09 +0500 (UZT)
X-Virus-Scanned: Debian amavisd-new at mail.billing.uz
Received: from mail.billing.uz ([127.0.0.1])
        by localhost (mail.billing.uz [127.0.0.1]) (amavisd-new, port 10024)
        with ESMTP id ubRO5bQLnRrF for <[email protected]>;
        Wed,  8 May 2019 11:46:08 +0500 (UZT)
Received: from [197.254.47.90.acesskenya.net] (unknown [197.254.47.90])
        by mail.billing.uz (Postfix) with ESMTPSA id 2F1FE98D7E8
        for <[email protected]>; Wed,  8 May 2019 11:45:53 +0500 (UZT)
From: <[email protected]>
X-CSA-Complaints: [email protected]
List-Subscribe:
 
<http://mailer.uzbilling.uz/misc/pages/subscribe/efn1318hojh15adejwc93el8fx9185fmajegha1w3z9lyak2u69ub9ghtrue>,
  
<mailto:[email protected]?subject=Subscribe+717012_9644_9_7598_6620489>
To: [email protected]
X-Priority: Medium
Message-ID: <[email protected]>
Date: Wed, 8 May 2019 08:45:57 +0200
Organization: Kmaet
Content-Type: multipart/related;
 boundary="yxjnmponx-146F064E6DEDF"
MIME-Version: 1.0
X-Sender-Info: <[email protected]>
Abuse-Reports-To: [email protected]
Subject: bona
X-Complaints-To: <[email protected]>
X-Abuse-Reports-To: <[email protected]>
User-Agent: Outlook 260/zywbd

This is a multi-part message in MIME format

--yxjnmponx-146F064E6DEDF
Content-Type: multipart/alternative;
        boundary="oqgofswtwj-2C41D70975D67373"

--oqgofswtwj-2C41D70975D67373
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: base64

DQotLSANCg0K
--oqgofswtwj-2C41D70975D67373
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: base64

-- 

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