On Thu, Feb 28, 2008 at 08:40:35AM -0500, Grant Peel wrote:
> Hi all,
>
> I have only recvently become aware of 'Backscatter, or NDR spam.
>
> My system uses exim. I have the stock check_rcpt_acl, along with several
> routers and transports that support virtual pop and virtual aliases.
>
> Each domain on my server has its own IP address.
>
> I was wondering if there is an addition to the check_rcpt_acl that can be
> added to elimate the NDR spaming tecnique.
Search Exim's documentation for BATV. However the suggested way to
use it in the Exim documentation might be an overkill in many
situations. An different method to use it is much more simple and can
be found at
http://www.exim-users.org/forums/showthread.php?t=51895 .
Be aware of the fact that if you have more than one mail server, it
will break sender verification unless you have the same setup on all
three.
I recently put a new server into production alongside two older one's
and I was forced to disable the BATV-configuration because it could
not be implemented on the older versions.
>
> Also, how does one elimiate bounces in Exim, and just reject the mail
> altogether?
You don't want to do that. Bounces carry important information when
they are valid.
Regards
Johann.
--
Johann Spies Telefoon: 021-808 4036
Informasietegnologie, Universiteit van Stellenbosch
"Seek ye the LORD while he may be found, call ye upon
him while he is near: Let the wicked forsake his way,
and the unrighteous man his thoughts: and let him
return unto the LORD, and he will have mercy upon him;
and to our God, for he will abundantly pardon."
Isaiah 55:6,7
