Not a clue what the problem is.
If you had give some appropriate information then someone on the list
might be able to answer - see
http://www.exim.org/eximwiki/MailingListEtiquette
However at present theres no actual evidence you are even using exim.
[If I was to make a wild guess though, I'd ask if you had upgraded your
Berkeley DB libraries recently]
Nigel.
--
[ Nigel Metheringham Nigel.Metheringham@??? ]
[ - Comments in this message are my own and not ITO opinion/policy - ]