Quitting Mac Mail application

Hi,
Recently I've been getting the following message after quitting the mail application in mac and it asks to enter my password to unlock Mail:
"dbfseventsd wants to access: Mail"
It doesn't happen every time I quit the application, but I've gotten it several times lately. I've never entered my password because I don't know what that means or if it's safe to do, so I just cancel access.
What does that mean?
S
Recently I've been getting the following message after quitting the mail application in mac and it asks to enter my password to unlock Mail:
"dbfseventsd wants to access: Mail"
It doesn't happen every time I quit the application, but I've gotten it several times lately. I've never entered my password because I don't know what that means or if it's safe to do, so I just cancel access.
What does that mean?
S