Identify surefire spams

Harry Putnam <[email protected]> Tue, 09 Dec 2014 11:37:54 -0500
Newsgroups gmane.mail.procmail
Organization Still searching...
Message-ID <[email protected]>
Zhiliang Hu <[email protected]> writes:

> To fight against increasingly aggressive spam mails, besides
> spam-assassin and a couple dozen filters I use to trash sure-spams,
> there still remain some mixed mails where I have to manually fish out
> good from bad or bad from good mails.

How to you identify the `sure-spams' you mention above?