On Wed, 30 Jun 2010 02:02:51 -0700 (PDT), Daniel Lemke <le...@jam-software.com> wrote:
> Are there any special rules that are able to identify this kind of spam? Its not spam, its misconfigured mailservers. Stupid people and malicious people are two different problems. Don't let bayes learn it as spam. We block them at MTA level using subject matching and http://www.backscatterer.org/ Although we block _all_ NDAs, and only whitelist some that are explicitly requested by $boss. May or may not suit your needs.