[Exim] spam filter

I'm trying to create my own small spam filter but it seems to block
everything rather than items on the list. It even stops me from sending
email.

sender_reject = partial-dbm;/usr/local/etc/exim/reject.db

reject.db
---------
*rd.sinetec.com.tw
*@10pins.com
*@mail.com
*@pluslotto.com
*@smiley.mechanik.uni-bremen.de

Any idea why it isn't blocking specifically these addresses?

Daniel