SPAMD stop passing mail from WHITE-list

[Владимир Капустин]

Hi, all!

I have spamd configured like in
http://home.nuug.no/~peter/pf/en/spamd.html
with greylisting enabled

and i meet some problems with it:

1. My 2 FreeBSD routers stopped to pass mail from WHITE-list. First one - when spamd grows to 500 Megabytes. Second - 350 Meg.
When I do: 
cat /dev/null > /var/db/spamd
all starts to work again

I wright small script which clears spamdb, but I don't think that it is the best idea.

2. If i have some malware on my PC and use mail-client program. If I send the same message some times I automatically get into WHITE-list and my malware can spam as much as it must?