Identifying spam by those numbers at the end of subject line

At the end of the subject line of some spam, there are 
several spaces followed by four numbers.  Does anyone 
have a recipe for detecting this?

Dick
--
Moderator: misc.taxes.moderated <www.asktax.org>

_______________________________________________
procmail mailing list
procmail(_at_)lists(_dot_)RWTH-Aachen(_dot_)DE
http://MailMan.RWTH-Aachen.DE/mailman/listinfo/procmail

<Prev in Thread]	Current Thread	[Next in Thread>
Identifying spam by those numbers at the end of subject line, Dick Adams <= Re: Identifying spam by those numbers at the end of subject line, Professional Software Engineering Re: Identifying spam by those numbers at the end of subject line, Ruud H.G. van Tol Re: [PROCMAIL] Re: Identifying spam by those numbers at the end of subject line, Trevor Jenkins Re: Identifying spam by those numbers at the end of subject line, Professional Software Engineering Re: Identifying spam by those numbers at the end of subject line, Alan Clifford Re: Identifying spam by those numbers at the end of subject line, Professional Software Engineering Re: Identifying spam by those numbers at the end of subject line, Ruud H.G. van Tol Re: Identifying spam by those numbers at the end of subject line, Daniel Liston Re: Identifying spam by those numbers at the end of subject line, Dallman Ross Re: Identifying spam by those numbers at the end of subject line, Dallman Ross