J.P. Trosclair wrote:
...
Could someone recommend a really good open source or affordable
commercial anti-spam solution?
...
I haven't done gray listing personally, but I've seen good remarks made aobut
it here on the list and in other places.
Depends on the source/nature of your spam. It's good for reducing the
load on SpamAssassin et. al. and it blocks lots of virus-sent spam.
Greylisting alone lets some through at work but I just rebuilt my *very*
old (circa late-90s) server at home and added greylisting and the
greylisting alone reduced the spam from 100+/day to 1 every day or two.
Cheers,
Steve