Redmine

Here is the config that worked for me to use Amazon simple email service.

It took me a little while to figure out, and by posting here I hope to help others.

default:
  email_delivery:
    delivery_method: :smtp
    smtp_settings:
      address: "email-smtp.us-east-1.amazonaws.com" 
      port: 2465
      domain: "the-from-domain.com" 
      authentication: :plain
      user_name: "SMTPUserNameFromAmazonSimpleEmailService" 
      password: "PasswordFromAmazonSimpleEmailService" 
      openssl_verify_mode: 'none'
      tls: true