Re: Too much backscatter spam in gnome.org aliases

[Olav Vitters <olav bkor dhs org>]

On Tue, Sep 23, 2008 at 10:00:00AM +0200, Olav Vitters wrote:
> If you have a solution to the backscatter, please share. The only
> address that I noticed having problems is the support gnome org alias,
> not any other address (aside from mailing lists).

After some discussion, set up:

/^Content-Type: multipart\/report; report-type=delivery-status\;/
REJECT no third-party DSNs
/^Content-Type: message\/delivery-status; /     REJECT no third-party
DSNs

as header checks.


Basically: reject externally generated DSN (bounces). This means if you
send an email using a mailserver *other than* mail.gnome.org (which is
highly likely) and the envelope from is your @gnome.org alias (also
likely), then you wont receive the bounces.

Note: gmail does it differently. It allows you to change the From:, but
envelope from will be different.

-- 
Regards,
Olav