AE 5.2 Password Self Service

We have recently configured the Password Self Service in AE 5.2.

Its working perfectly fine but not sending mail to user's id.

We have configured the following settings in AE 5.2

1) Configured the connectors for SAP HR System

2) Password Self Service - to authenticate against SSN* no.

Communication type 0105 and PERNR as a field.

3) Authentication - SAP HR System details.

For Password Email notification :

1) SMTP Server details

2) Background jobs

For email dispatcher with every 60 seconds as a time period.

3) Miscellenous setting for background job interval

It is successfully resetting the password for user id in backend system, but unable to send the eamil notification to users.

Now my questions are

1) How can we check the logs that why is it not sending the password email notifications.. ?

2) Do we need to configure scot - email setting in the backend system.. ?

3) In UME we have Java store/UME user store as a database..?users only exist in the backend system and are not there in UME..?

does it create any effect for this..?