How to reject/detect emails claiming to be from my own domain?

[Philip Parsons]

Any chance you have an example ?

-----Original Message-----
From: MailScanner [mailto:mailscanner-bounces+pparsons=techeez.com at lists.mailscanner.info] On Behalf Of Mark Sapiro
Sent: December 29, 2016 10:10 AM
To: mailscanner at lists.mailscanner.info
Subject: Re: How to reject/detect emails claiming to be from my own domain?

On 12/29/2016 09:50 AM, Philip Parsons wrote:
> I am trying to get one that does the envelope-from header so at the 
> MTA side of things.  I am hoping someone has done this with sendmail 
> as changing the MTA is not possible at the moment.  The rule set from 
> Thom van der Boon works great on the From header.


But, with sendmail and other compliant MTAs, the envelope sender will be put in a Return-Path: header, so if you alter the From: rules that work to look at Return-Path: instead, that should deal with envelope senders.

-- 
Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan


--
MailScanner mailing list
mailscanner at lists.mailscanner.info
http://lists.mailscanner.info/mailman/listinfo/mailscanner


-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.