From: owner-postfix-us...@postfix.org
[mailto:owner-postfix-us...@postfix.org] On Behalf Of Jeroen Geilman
Sent: Thursday, June 10, 2010 4:02 PM
To: postfix-users@postfix.org
Subject: Re: how to stop backscatter without check headers
On 06/11/2010 12:44 AM, motty.cruz wrote:
Is there a best way to stop backscatter spam without using check headers?
Traffic is too heavy to user check headers + we received email for three
different domains.
Using postfix 2.6.
Thanks,
motty
To stop backscatter spam, don't accept mail you cannot deliver.
That is a very smart answer, please pardon my stupidity.
Header_checks are trivially spoofed.
J.
Spammers spoof the "from" and gets redirected to "user" in my domain? How do
you fight that?
From: Mail Delivery Subsystem [mailto:mailer-dae...@smtp.newsguy.com]
Sent: Thursday, June 10, 2010 1:28 AM
To: u...@obscure.com
Subject: Returned mail: see transcript for details
The original message was received at Thu, 10 Jun 2010 01:28:19 -0700 (PDT)
from [124.217.198.141]
----- The following addresses had permanent fatal errors -----
<eri...@newsguy.com>
(reason: Can't create output)
----- Transcript of session follows ----- 550 5.0.0
<eri...@newsguy.com>... Can't create output
