I've two mail server, one running exim4 as smarthost. atm it delivers all mails to the second server (with the mailboxes). Now I want the smarthost to send all message also to a new server for testing.
I tried it with: route_list = domain ip1:ip2
but with this conf exim only sends the mails to ip2 if ip1 is down. Is there a possibility to send all mails to both?