Redmine

documentation says, that it is need to create configuration.yml
http://www.redmine.org/projects/redmine/wiki/EmailConfiguration

I created:

production:
email_delivery:
delivery_method: :smtp
smtp_settings:
tls: true
enable_starttls_auto: true
address: "smtp.gmail.com"
port: '587'
domain: "smtp.gmail.com"
authentication: :plain
user_name: "***"
password: "***"

But my redmine version 1.3.0 says:

Email delivery is not configured, and notifications are disabled.
Configure your SMTP server in /etc/redmine/<instance>/email.yml and restart the application to enable them.