[Samba] Integration with AD and mail service

[Guilherme Boing]

Hi,

As of now my mail server is basically postfix.

Did anyone succeed integrating the Samba4 AD DC users with any mail daemon ?
I was searching for some guide or anything like that but couldn't really
find anything "easy".

My main questions are:
1) I have several mail domains to host. Can I use all of them with my
single DC/DOMAIN ?
2) The usernames are not the same as the email (e.g.: AD user is
guilherme.walter but my email is somethingelse at my.domain). Would it work ?

Thanks.