[Exim] Exim performance and capacity

Hi

I'm looking to set up a _very_ large mail server which has the potential
to be handling up to 1 million deliveries per day. (and no, it's not
going to be spamming people :-) ). Obviously our system will be using
multiple mail servers , but I was wondering what people's experience is
with exim as far as capacity speed and scalability are concerned, and
would it be able to handle deliveries on this scale. I have looked at
the FAQ, but I just wanted to get a broader idea of people's experiences


Thanks

Davids Rigby