On Thu, 7 Jun 2007, Richard Clayton wrote:
>
> By understanding the structure of the mail systems that send you email
> and picking out the appropriate header for the appropriate system.
> This doesn't scale well, but it is one way of dealing with a handful of
> major systems where you don't want to penalise the many for the
> activities of the few...
SpamAssassin's heuristics for this cover more than just a handful of major
systems, though they do have a fair bit of ad-hoc code for dealing with
the variability of Received: headers.
Tony.
--
<fanf@???> <dot@???>
http://dotat.at/ ${sg{\N${sg{\
N\}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}\
\N}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}
