Because changing password in OWA no longer works after switching to Office 365/ Exchange Online I searched a solution for that, and found AD SelfService. 

Everything works fine so far (users could change their password again without having to be inside our network), but in the process of evaluation i also wanted to try the Password expiration Notifier. 

I have set up e-mail Server, was able to get the Test E-Mail without any problems. 

I set up the Notifier to send Mails to Users 7, 3 and 1 day before the password would expire.But none of the users is getting the mail. I also activated to send the administrator the delivery report and used my mail adress for it. I am getting the mail, that the notifications had been sent - but none of our users had gotten any mails from the Notifier. Very strange ...

All users are in Domain, mail attribute is in AD ...

Have i miss something? 

Would appreciate any help on that topic. 

Kind Regards,

Andreas