# Action Mailer problem **URL:** \ **Category:** Rails\ **Created:** [March 21, 2009, 9:46pm UTC](https://www.ruby-forum.com/t/action-mailer-problem/163553 "2009-03-21T21:46:03Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![tkbeili](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/7bcc69/32.png) [@tkbeili](https://www.ruby-forum.com/u/tkbeili)\ **Post date:** [March 21, 2009, 9:46pm UTC](https://www.ruby-forum.com/t/action-mailer-problem/163553/1 "2009-03-21T21:46:03Z")
Hello, I’m trying to make my rails app send mail. I’m using Postfix + Dovecot + SASL on Linux Debian VPS: [http://www.debianadmin.com/debian-mail-server-setup-with-postfix-dovecot-sasl-squirrel-mail.html](http://www.debianadmin.com/debian-mail-server-setup-with-postfix-dovecot-sasl-squirrel-mail.html) I’m using the following configuration in environment.rb: config.action\_mailer.delivery\_method = :smtp config.action\_mailer.smtp\_settings = { :address =\> “localhost”, :port =\> 25, :domain =\> “[domain.com](http://domain.com)”, :user\_name =\> “user”, :password =\> “password”, :authentication =\> :plain } I see the following error: /!\ FAILSAFE /!\ Sat Mar 21 13:40:53 -0700 2009 Status: 500 Internal Server Error 535 5.7.0 Error: authentication failed: authentication failure ``` /opt/ruby-enterprise-1.8.6-20090201/lib/ruby/1.8/net/smtp.rb:585:in ``` `auth_login' /opt/ruby-enterprise-1.8.6-20090201/lib/ruby/1.8/net/smtp.rb:570:in ` **send** ’ /opt/ruby-enterprise-1.8.6-20090201/lib/ruby/1.8/net/smtp.rb:570:in `authenticate' /opt/ruby-enterprise-1.8.6-20090201/lib/ruby/1.8/net/smtp.rb:410:in `do\_start’ /opt/ruby-enterprise-1.8.6-20090201/lib/ruby/1.8/net/smtp.rb:377:in `start' /opt/ruby-enterprise-1.8.6-20090201/lib/ruby/1.8/net/smtp.rb:315:in `start’ /var/www/releases/20090318014324/vendor/rails/actionmailer/lib/action\_mailer/base.rb:627:in `perform_delivery_smtp' /var/www/releases/20090318014324/vendor/rails/actionmailer/lib/action_mailer/base.rb:508:in ` **send** ’ /var/www/releases/20090318014324/vendor/rails/actionmailer/lib/action\_mailer/base.rb:508:in `deliver!' /var/www/releases/20090318014324/vendor/rails/actionmailer/lib/action_mailer/base.rb:383:in `method\_missing’ /var/www/releases/20090318014324/app/controllers/application.rb:74:in `log_error' /var/www/releases/20090318014324/vendor/rails/actionpack/lib/action_controller/rescue.rb:115:in `rescue\_action’ /var/www/releases/20090318014324/vendor/rails/actionpack/lib/action\_controller/rescue.rb:203:in `perform_action_without_caching' /var/www/releases/20090318014324/vendor/rails/actionpack/lib/action_controller/caching/sql_cache.rb:13:in `perform\_action’ … Any ideas? Thanks, Tam