Does any vendor make an anti-spam product that is cheap, runs on a Windows
server, and can be configured only to filter messages that are best
classified as gibberish? There is a whole class of spam that mostly slips
through anti virus filters that consists of nothing but meaningless streams
of characters and nonsensical expressions using misspelled words.

Additional requirements:

- I would want to filter out such gibberish to a special mail account and
then forward the good e-mail to a regular mail server.

- I need to be able to whitelist both individual email addresses and entire
domains, because we do get many e-mails filled with lots of technical part
numbers and jargon, but thankfully this is from less than 100 domains that
we can easily whitelist.

- I need to be able to turn off other kinds of spam filtering. (I find too
many false positives with most spam filters.)

Are there any good options for such a product?

--
Will