ActionMailer: Hostname not match server certificate

ActionMailer: Hostname not match server certificate 错误的解决办法

解决办法：
development.rb
require 'tlsmail'
  config.action_mailer.delivery_method = :smtp
  ActionMailer::Base.smtp_settings = {
      :address => '',
      :port => 25,
      :domain => '',
      :authentication => :login,
      :user_name => '',
      :password => '',
      :enable_starttls_auto => true
  }

Gemfile

gem 'tlsmail'