Thanks for your answer. I choose "Internet site with smarthost" because i had no answer to my previous posts and tried to make this work.
If you look at my first post i did not choose any relayhost and emailing out wasn't working neither.
I tried email routing, relay recipients and almost everything in ISPConfig without success.
If this configuration isn't meant to send outgoing mails, just tell me i'll stop trying to.
If i have to buy the ISPConfig documentation, tell me, i'll do it (i haven't seen anything about relays in the old version i bought for V2).
I just find hard to believe that a "Perfect mail server" can't handle outgoing mails