OT: URI Blacklisting at MTA Level

[Steve Freegard]

Hi All,

I posted the message below to the SURBL and URIBL lists a couple of days
ago, I thought I'd re-post here as I'm using it in front of MailScanner
to reduce the overall system load:

> I've written a basic Sendmail milter in Perl using Sendmail::PMilter
> which uses the SpamAssassin libraries with just the 20_uri_tests.cf
> rules file (so it is relatively light) to strip the URI's from a
> message
> and then check them against multi.surbl.org and black.uribl.com and
> reject any messages that contains blacklisted URI's.
> 
> It's rough code at the moment - there's no whitelisting or any
> start/stop scripts for it yet and this is my first attempt at anything
> in Perl - I've been running it on our spam trap for a while now and
> it's
> worked very well, I have not tried it on a production system yet.
> 
> I'm posting it here in case anyone finds this useful and for comment -
> It can be downloaded from http://www.fsl.com/support/milter-uri.pl --
> installation instructions are in the file.

Kind regards,
Steve.