Redmine

class ActionMailer::Base

  def perform_delivery_smtp(mail)

    destinations = mail.destinations

    mail.ready_to_send

    sender = mail['return-path'] || mail.from

    smtp = Net::SMTP.new(smtp_settings[:address], smtp_settings[:port])

    if smtp_settings[:ssl]

      smtp.enable_tls()

    else

      smtp.enable_starttls_auto if smtp_settings[:enable_starttls_auto] && smtp.respond_to?(:enable_starttls_auto)

    end

    smtp.start(smtp_settings[:domain], smtp_settings[:user_name], smtp_settings[:password],

               smtp_settings[:authentication]) do |smtp|

      smtp.sendmail(mail.encoded, sender, destinations)

    end

  end

end