Preventing crap email from google?

[Ben Finney]

Grant Edwards <invalid at invalid.invalid> writes:

> Posts made via the google-groups web site are a problem, and I plonked
> them all years and years ago...

Walter Hurry <walterhurry at lavabit.com> writes:

> It is Google bloody Groups which is the problem. I should have plonked 
> posts from there ages ago, and am about to remedy that omission.

What narrowly-defined, precise filter rule should be used for this
purpose?

-- 
 \      “Nothing is more sacred than the facts.” —Sam Harris, _The End |
  `\                                                   of Faith_, 2004 |
_o__)                                                                  |
Ben Finney