Backscatter solutions

[Dennis Davis]

On Fri, 9 May 2008, Andy Fiddaman wrote:

> From: Andy Fiddaman <cyrus at fiddaman.net>
> Cc: info-cyrus at lists.andrew.cmu.edu
> Date: Fri, 9 May 2008 07:05:06 +0000 (GMT)
> Subject: Re: Backscatter solutions

...

> Pretty much the only way to stop this is to use something like
> BATV to tweak your envelope sender address outbound. That still
> doesn't stop everything as out-of-office replies are usually sent
> from a real address.
>
> http://tools.ietf.org/html/draft-levine-mass-batv-02
> http://sourceforge.net/projects/batv-milter/

See:

http://www.exim.org/exim-html-current/doc/html/spec_html/ch40.html#SECTverifyPRVS

for details of how to implement BATV using exim.
-- 
Dennis Davis, BUCS, University of Bath, Bath, BA2 7AY, UK
D.H.Davis at bath.ac.uk               Phone: +44 1225 386101