Configuration ActionMailer设置在开发和生产之间的差异不正确 错误

我有我的ActionMailer设置，并且在开发中工作得非常好。我可以打电话给

UserMailer.welcome（user）.deliver

，电子邮件就会到达目的地。但是，当我将代码推入生产环境并调用相同的

deliver

方法时，突然出现了一个错误：

Errno::ECONNREFUSED: Connection refused - connect(2)
    from /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/smtp.rb:546:in `initialize'
    from /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/smtp.rb:546:in `open'
    from /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/smtp.rb:546:in `tcp_socket'
    from /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/smtp.rb:555:in `block in do_start'
    from /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/timeout.rb:58:in `timeout'
    from /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/timeout.rb:89:in `timeout'
    from /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/smtp.rb:555:in `do_start'
    from /usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/smtp.rb:525:in `start'
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/gems/mail-2.3.0/lib/mail/network/delivery_methods/smtp.rb:128:in `deliver!'
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/gems/mail-2.3.0/lib/mail/message.rb:1989:in `do_delivery'
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/gems/mail-2.3.0/lib/mail/message.rb:230:in `block in deliver'
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/bundler/gems/rails-5680a51dcbaf/actionmailer/lib/action_mailer/base.rb:414:in `block in deliver_mail'
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/bundler/gems/rails-5680a51dcbaf/activesupport/lib/active_support/notifications.rb:55:in `block in instrument'
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/bundler/gems/rails-5680a51dcbaf/activesupport/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/bundler/gems/rails-5680a51dcbaf/activesupport/lib/active_support/notifications.rb:55:in `instrument'
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/bundler/gems/rails-5680a51dcbaf/actionmailer/lib/action_mailer/base.rb:412:in `deliver_mail'
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/gems/mail-2.3.0/lib/mail/message.rb:230:in `deliver'
    from (irb):10
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/bundler/gems/rails-5680a51dcbaf/railties/lib/rails/commands/console.rb:45:in `start'
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/bundler/gems/rails-5680a51dcbaf/railties/lib/rails/commands/console.rb:8:in `start'
    from /webapps/myapp/production/shared/bundle/ruby/1.9.1/bundler/gems/rails-5680a51dcbaf/railties/lib/rails/commands.rb:40:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

这显然与我在mailers.yml中定义的设置相匹配。在生产中，当我进行相同的调用时，输出为：

#<Mail::SMTP:0x000001042c4a20 @settings={
  :address=>"smtp.gmail.com",
  :port=>587,
  :domain=>"foobar.com",
  :user_name=>"example@foobar.com",
  :password=>"MY_PASSWORD",
  :authentication=>"plain",
  :enable_starttls_auto=>true,
  :openssl_verify_mode=>nil}>

#<Mail::SMTP:0xbfb2c18 @settings={
  :address=>"localhost",
  :port=>25,
  :domain=>"localhost.localdomain",
  :user_name=>nil,
  :password=>nil,
  :authentication=>nil,
  :enable_starttls_auto=>true,
  :openssl_verify_mode=>nil}>

config/mailers.yml:

Myapp::Application.config.action_mailer.delivery_method = :smtp
Myapp::Application.config.action_mailer.smtp_settings = YAML.load_file(
    Rails.root.join('config', 'mailers.yml'))[Rails.env].to_options

default: &default
  address:              smtp.gmail.com
  port:                 587
  domain:               foobar.com
  user_name:            example@foobar.com
  password:             MY_PASSWORD
  authentication:       plain
  enable_starttls_auto: true

development:
  <<: *default

production:
  <<: *default

Myapp::Application.configure do
  # ...
  config.action_mailer.raise_delivery_errors = false
  config.action_mailer.default_url_options = { :host => 'localhost:3000' }
  config.action_mailer.interceptors = ['MailInterceptor']
  # ...
end

Myapp::Application.configure do
  # ...
  config.action_mailer.default_url_options = { :host => 'foobar.com' }
  # ...
end

config/environments/production.rb:

Myapp::Application.config.action_mailer.delivery_method = :smtp
Myapp::Application.config.action_mailer.smtp_settings = YAML.load_file(
    Rails.root.join('config', 'mailers.yml'))[Rails.env].to_options

default: &default
  address:              smtp.gmail.com
  port:                 587
  domain:               foobar.com
  user_name:            example@foobar.com
  password:             MY_PASSWORD
  authentication:       plain
  enable_starttls_auto: true

development:
  <<: *default

production:
  <<: *default

Myapp::Application.configure do
  # ...
  config.action_mailer.raise_delivery_errors = false
  config.action_mailer.default_url_options = { :host => 'localhost:3000' }
  config.action_mailer.interceptors = ['MailInterceptor']
  # ...
end

Myapp::Application.configure do
  # ...
  config.action_mailer.default_url_options = { :host => 'foobar.com' }
  # ...
end

请注意，我还尝试在development.rb中注释掉这两个额外的行（并尝试将它们添加到production.rb中），没有任何更改——我在生产中仍然会遇到相同的错误，但在开发中不会

此外，尽管我认为这不相关，但我将在development.rb中包含我引用的

mailsintercept

（它只是将所有邮件重定向到我的电子邮件地址，而不是测试用户的电子邮件地址）：

---

虽然这似乎与我认为的Rails3.1配置的标准方法背道而驰，但我还是找到了答案

更改此行：

Myapp::Application.config.action_mailer.smtp_settings = YAML.load_file(
    Rails.root.join('config', 'mailers.yml'))[Rails.env].try(:to_options)

为此：

ActionMailer::Base.smtp_settings = YAML.load_file(
    Rails.root.join('config', 'mailers.yml'))[Rails.env].try(:to_options)

---

仍然不确定为什么前者在开发中有效，而不是在生产中，但后者现在在生产中对我有效，所以这就是我现在要做的。

您是否有您的

环境。rb

设置如下：

Myapp::Application.initialize!
Myapp::Application.configure do { }

---

如果是，则交换这两行。我曾经（mailer config在开发环境中工作，而不是在其他环境中），这就是问题所在。

感谢您发布修复程序。。我遇到了这个问题！没问题，很高兴我能为你节省一些时间！我花了整整一天的时间才找到它/