postfix-users November 2010 archive
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postfix-users: Re: Tons of Delivery Status Notifications from ra

Re: Tons of Delivery Status Notifications from random places.

From: Ansgar Wiechers <lists_at_nospam>
Date: Wed Nov 24 2010 - 17:11:35 GMT
To: postfix-users@postfix.org

On 2010-11-24 Patric Falinder wrote:
> lst_hoe02@kwsoft.de skrev 2010-11-24 11:08:
>> Be sure to limit the usage of the list to the affected account and maybe
>> even to bounce sender addresses as a lot of legitim hosts are listed.
>> See http://www.backscatterer.org/?target=usage
>
> Ok, thanks! Is there any other ways to protect yourself against
> backscatter?

I wrote a filter based on smtpprox [1]. Disclaimer: AFAIK this has never
been used on medium or high traffic servers, so I don't know how it
would perform in such environments.

[1] http://www.planetcobalt.net/sdb/backscatter.shtml

Regards
Ansgar Wiechers
-- "Abstractions save us time working, but they don't save us time learning." --Joel Spolsky