I find out now that not all users receive the notification by-mail.
I am using the free version.3.3.247.
please look into the attached log.
one of the users that didn't receive the notification is "dariab" which her e-mail address is :firstname.lastname@example.org.
one user replied to my question and updated that he did receive the notification. his e-mail address is" email@example.com.
the "meigala" account is under users ou.
the user "dariab" is under "fast" ou. Does it matter ?
please rename file extension from doc to log before opening.