Redmine

I am trying to disable all email notifications to myself, but also for my colleagues. I am the administrator and have set the email notifications in my preferences to "no events" and I have unchecked all of the "Select actions for which email notifications should be sent" under Administration >> Settings >> Email Notifications. I am still getting nightly reminder emails and so are all of the users.

Environment:
Redmine version 2.1.4.stable
Ruby version 1.9.3 (i386-mingw32)
Rails version 3.2.8
Environment production
Database adapter Mysql2
Redmine plugins:
due_date_reminder 0.3.2
redmine_code_review 0.6.2
redmine_didyoumean 1.1.0
redmine_dmsf 1.4.5 stable
redmine_logs 0.0.5
redmine_monitoring_controlling 0.1.1