[xwiki-users] External SMTP with authentication?

Hi, I decided to not install any email software on my server, as I don't have the time and the knowledge to maintain it. I'm used from various PHP application to use an external SMTP server with authentication, which is very practical for my purposes...so, is it possible to configure XWiki to take a SMTP server with authentication (like smtp.gmail) without having a mail application installed on the server? Thanks, Squirrel