Re: [exim] Sender verification

--On 27 October 2005 14:20:20 +0200 Ian FREISLICH <if@???> wrote:

>
> FWIW (if you want this for an anti spam measure) I've decided that
> callouts are evil. There are loads of domains that you will need
> to make 2 callouts because they refuse mail from <>. I couldn't
> be bothered in the end to actively maintain a whitelist and dropping
> the callout did not affect my incoming spam rate.

Hmm, we've rejected about 100 viruses today (using sender verification
callout) that other sites are reporting having accepted. These are viruses
that went undetected by their virus scanning software.

--
Ian Eiloart
Servers Team
Sussex University ITS