Configure your email
Inside your config directory in redmineroot directory, create a new file called configuration.yml and configure your SMTP settings for redmine like this.
production:
email_delivery:
delivery_method: :smtp
smtp_settings:
enable_starttls_auto: true
address: "smtp.office365.com"
port: 587
domain: "poopcode.com"
authentication: :login
user_name: "heyhey@poopcode.com"
password: "PoopCoDe123!"Test and save redmine settings
At the bottom of your email settings page, there is a link to test your email configuration.