[exim] Random smarthost

Hi all,

I want to setup an Exim instance that should send it's emails to two
smarthosts but in random order. So that I have some kind of load
balancing. I can't use MX records. So far I tried to use this in the
smarthost definition:

route_list = * 192.168.2.62:+:192.168.2.63 randomize bydns

The only thing I get from it is when the first host is down it uses the
second host.
Any help _much_ appreciated.

Peace,
--
Markus Meyer