[exim] Exim: smart_route / routing based on From:

Hi all,

I have a short question: I would like to configure Exim to send all Mails through host serverabc:

smart_route:
driver = manualroute
domains = ! +local_domains
transport = remote_smtp
route_list = "* serverabc"

which works pretty good, but now i want one exception from this rule:
If "From:" of the Mail (not neccessarily the Sender:) is foo@baa mails should be send
through serverxyz.

is this possibile ?

Thanks and regards
Sascha