spamassassin-users October 2010 archive
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spamassassin-users: Re: New plugin: DecodeShortURLs

Re: New plugin: DecodeShortURLs

From: David Touzeau <david_at_nospam>
Date: Tue Oct 05 2010 - 12:40:37 GMT
To: users@spamassassin.apache.org

Many thanks

ADDED in Artica web Open Source Interface !!

http://www.artica.fr/index.php/menudocmessaging/39-manage-filters-anti-spam-content-filters/391--shorturls-spam-checking-plugin-with-spamassassin

On 17/09/2010 15:11, Steve Freegard wrote:
> Hi All,
>
> Recently I've been getting a bit of filter-bleed from a bunch of spams
> injected via Hotmail/Yahoo that contain shortened URLs e.g. bit.ly/foo
> that upon closer inspection would have been rejected with a high score
> if the real URL had been used.
>
> To that end - it annoyed me enough to write a plug-in that decodes the
> shortened URL using an HTTP HEAD request to extract the location header
> sent by the shortening service and to put this into the list of
> extracted URIs for other plug-ins to find (such as URIDNSBL).
>
> On the messages I tested it with - it raised the scores from <5 to >10
> based on URIDNSBL hits which is just what I wanted.
>
> Hopefully it will be useful to others; you can grab it from:
>
> http://www.fsl.com/support/DecodeShortURLs.pm
> http://www.fsl.com/support/DecodeShortURLs.cf
>
> Kind regards,
> Steve.
>