KMail, Spam, Advice Wanted

>       I use kmail (KDE Mail) for all Email. Currently, Kmail is configured

> go and fetch my Email from four different places every ten minutes or so
> (while launched and sitting on my desktop).
>      I need to implement two changes: first, the spam is getting utterly
> ridiculous and I need something automatic to pre-classify incoming traffic
> into "might be spam" and "probably not spam" (and "definately spam"?)
> categories.
>      Secondly, I need to split my wife's email out into a separate "place"

>      Here's what I think I need to do (please correct my thinking or, if
> there's a better way, please let me know):

>      Looks like I'll have fetchmail set up in a cron entry, and I'll need

> have an SMTP agent on machine #1 to "serve" the Email out to me (kmail, on
> same system) or my wife (mozilla, different system).
>      Does that look right? (Suggestions for the spam filtering daemon

>      TIA!