Re: [Exim] Avoiding frozen spam

Mark Edwards wrote:

> [...] Or better yet, test
> the return address for validity first and give up immediately if (like
> 99.999% of spam) the return adddress goes nowhere? I don't see any way
> of adding an address check to a system filter.
>
> Can someone suggest an elegant way of achieving this? Thanks!

But the book: <http://www.uit.co.uk/exim-book>

or buy the book and rtfm:
<http://www.exim.org/exim-html-4.20/doc/html/spec_37.html#SECT37.14>