Hello everyone,
I'd like some advice on how to prevent these spam messages that spoof the sender's name by inserting the same address as the recipient's.
They always come from the "xxxx.bc.googleusercontent.com" servers with a header like this:
---------------------------
From: Agency Help <info@real-domain-name.com>
To: info@real-domain-name.com
Return-Path: <>
Received: from [10.88.0.4] (46.206.190.35.bc.googleusercontent.com [35.190.206.46]) by ******* with SMTP;
Sat, 10 Jan 2026 13:12:13 +0100
Content-Type: multipart/related; boundary="===============0782764610031259282=="
MIME-Version: 1.0
From: Agency Help <info@real-domain-name.com>
To: info@real-domain-name.com
Subject: =?utf-8?b?UmU6?=
Reply-To: your-email@yourdomain.com
X-Priority: 2
---------------------------
The messages are intercepted by anti-spam rules and quarantined, but I wish they were blocked before they reached the server, Is there a way to do this?
Thanks
Mark