rails_test_smtp.rb

rails_test_smtp.rb

#start of with a (hopefully) working Rails Settings
settings = ActionMailer::Base.smtp_settings

#Change credentials that you want to test
settings[:user_name] = "new_username@example.com"
settings[:password] = "Password"
settings[:key] = "Password" #For TLS, this is usually the same with password
envelope_from = "new_username@example.com" #For most SMTP servers, this should be consistent
destinations = "destination@example.com,destination2@example.com"
message = <<< MESSAGE
From: new_username@example.com
To: destination@example.com
Subject: Test message

This is a test message.
MESSAGE

#http://stackoverflow.com/a/6098918/95552
#line 96 of mail-2.2.7/lib/mail/network/delivery_methods/smtp.rb
smtp = Net::SMTP.new(settings[:address], settings[:port])
if settings[:enable_starttls_auto]
smtp.enable_starttls_auto if smtp.respond_to?(:enable_starttls_auto)
end

smtp.start(settings[:domain], settings[:user_name], settings[:password],
settings[:authentication]) do |smtp|
smtp.sendmail(message, envelope_from, destinations)
# @Mason: this line need not be included in your code. SMTP#start throws
# a Net::SMTPAuthenticationError if the authentication was not successful.
# So just putting this call to #start with an empty block in a method and
# calling assert_no_raise Net::SMTPAuthenticationError should do the trick.
# The empty block is necessary so that the connection gets closed.
# Reference #{rubydir}/lib/ruby/1.8/net/smtp.rb for more info.
end