exim4 db corruption

i often grep through my logs looking for a clue. i saw this:

/var/spool/exim4/db/*: unexpected file type or format

in other words:
tis corrupted milady.

[root@badbox ~]#/etc/init.d/exim4 stop
[root@badbox ~]#cd /var/spool/exim4
[root@badbox exim4]# cp -R db/ db.bak
[root@badbox exim4]# cd db/
[root@badbox db]#  rm -rf *
[root@badbox ~]# /etc/init.d/exim4 start