Matthew,

<< There's a case on the web where someone objected to the planning
permission of a neighbour, and the council didn't get his objection until
after permission was granted and he emailed without the word "erection" in
the email. Single word filtering can be very dangerous unless you use
weights (I used to sell a spam filter - used DBISAM as it happens) and
customers were always getting caught on single words losing their mail. >>

I understand, but I can pretty much guarantee that not one single person has
ever sent us a legitimate email with the word "erection" in the Subject
header. It's just the nature of our business - if we were in the
construction (or porn) business, we couldn't get away with that.

In addition, our mail server's error response indicates the reason for the
rejection, so at least the end user has an idea of why we rejected the
email.

--
Tim Young
Elevate Software
www.elevatesoft.com