Rules don't trigger email.

Hi,

I have installed Alfresco Community (5.0), the recent activity emails and the "test" email configured in global.properties are working fine, but when a folder rule calls a "send mail" action, this is not working. I've checked:

-The users have a mail.
-Test mail is working
-Recent activites mail is working
-Invitation mail is not working
-Rule with mail action is not working

To show better information, how i can generate mail log/debug? Any idea of the problem ?

Thanx