[Exim] 2 transport remote smtps

I have different mail accounts at different providers

me@???
meto@???
alsome@???

my system is a standalone machine without FQDN and
frequent ppp dialup.

How do I tell exim to send mail
with Reply-To: me@??? via smtp mail.provider1.net
with Reply-To: meto@??? via smtp mail.provider2.net
with Reply-To: alsome@??? via smtp mail.provider3.de

If for example all goes via mail.provider1.net there might be
"We do not relay", and I want to be sure, all is correct.

I suppose if I can get this working I will be able to do the
message id replacing by a valid one of the respective provider
myself. Sorry, but I could not find anything in those masses
of information.

CC would be nice as I am not yet subscribed. Thanks
Erika