The message
from "dave or stella @ stejonda"
contains these words:

In message , Sacha
writes
If you can tell me how to do that on my Mac, I'd be glad to!

the first result when searching Google for 'Microsoft-Entourage
killfile' is an article recommending switching to Mozilla Thunderbird
(is that available for the Mac?)

MacSoup certainly has 'an easy to use' Killfile facility (snip)

"X-no-archive-yes" is different from a killfile ,it controls the
destination of outgoing usenet posts not incoming ones. IIRC it became
available when google acquired dejanews (the original usenet archive)
before google expanded the archive to became a full usenet portal. Now
that google has become a usenet portal, they do show X-marked posts
but only for 7 days. gardenbanter doesn't show them at all.

I can acces the post-marking facility through the options toolbar
supplied by my newsreader and a click on a box sets it to appear
automatically in every post. But those who don't have an automated
facility, can just type in manually at the top of each post
"x-no-archive-yes" and it will work just as well.

Janet

--
Isle of Arran Open Gardens weekend 21,22,23 July 2006
5 UKP three-day adult ticket (funds go to island charities) buys entry
to 26 private gardens