调试 SMTP 超时错误答案

【问题标题】：Debugging an SMTP Timeout Error调试 SMTP 超时错误
【发布时间】：2011-02-20 07:04:21
【问题描述】：

我正在开发一个使用 Action Mailer 发送邮件活动的 Rails 项目。目前，我一直在使用普通的旧 GMail 帐户测试所有内容。现在离发布越来越近了，我决定将 smtp 服务器切换到我们的本地邮件服务器。

在我们尝试实际发送邮件之前，这一切都很好。使用这些新的 smtp 服务器设置，邮件程序只会超时：

MY_SMTP_SETTINGS = {
  :address => 'oz.some.server.edu',
  :port => 465,
  :user_name => MY_USERNAME,
  :authentication => :login,
  :password => MY_PASSWORD
}

这是我在尝试发送活动一段时间后收到的错误的堆栈跟踪：

    Timeout::Error: execution expired
    from /opt/local/lib/ruby/1.8/timeout.rb:60:in `rbuf_fill'
    from /opt/local/lib/ruby/1.8/net/protocol.rb:134:in `rbuf_fill'
    from /opt/local/lib/ruby/1.8/net/protocol.rb:116:in `readuntil'
    from /opt/local/lib/ruby/1.8/net/protocol.rb:126:in `readline'
    from /opt/local/lib/ruby/1.8/net/smtp.rb:911:in `recv_response'
    from /opt/local/lib/ruby/gems/1.8/gems/ambethia-smtp-tls-1.1.2/lib/smtp-tls.rb:19:in `do_start'
    from /opt/local/lib/ruby/1.8/net/smtp.rb:921:in `critical'
    from /opt/local/lib/ruby/gems/1.8/gems/ambethia-smtp-tls-1.1.2/lib/smtp-tls.rb:19:in `do_start'
    from /opt/local/lib/ruby/1.8/net/smtp.rb:525:in `start'
    from /opt/local/lib/ruby/gems/1.8/gems/actionmailer-2.3.2/lib/action_mailer/base.rb:681:in `perform_delivery_smtp'
    from /opt/local/lib/ruby/gems/1.8/gems/actionmailer-2.3.2/lib/action_mailer/base.rb:523:in `__send__'
    from /opt/local/lib/ruby/gems/1.8/gems/actionmailer-2.3.2/lib/action_mailer/base.rb:523:in `deliver!'
    from /opt/local/lib/ruby/gems/1.8/gems/actionmailer-2.3.2/lib/action_mailer/base.rb:395:in `method_missing'
    from /Users/ryan/Development/gsoc/cohort/repo/app/models/freemailer_campaign.rb:39:in `send_campaign'
    from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/associations/association_collection.rb:364:in `method_missing_without_paginate'
    from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/associations/association_proxy.rb:219:in `method_missing'
    from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/associations/association_proxy.rb:219:in `each'
    from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/associations/association_proxy.rb:219:in `send'
    from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/associations/association_proxy.rb:219:in `method_missing'
    from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/associations/association_collection.rb:364:in `method_missing_without_paginate'
    from /Users/ryan/Development/gsoc/cohort/repo/vendor/plugins/will_paginate/lib/will_paginate/finder.rb:167:in `method_missing'
    from /Users/ryan/Development/gsoc/cohort/repo/app/models/freemailer_campaign.rb:37:in `send_campaign'

有没有人知道我该如何查明我的问题？

【问题讨论】：

标签： ruby-on-rails ruby email smtp

【解决方案1】：

问题不在于 ruby，而在于电子邮件服务器。确保电子邮件服务器正常工作 (testing email server through telnet console)，然后重试。

【讨论】：

【解决方案2】：

尝试远程登录到 SMTP 框。

【讨论】：

【解决方案3】：

在您的邮件服务器上使用 telnet 的 465 端口，如果它未打开，请检查防火墙和邮件服务器配置。您也可以尝试对您的 actionmailer 设置进行此操作：

 :authentication => :plain (if so),
 :enable_starttls_auto => true

【讨论】：

【解决方案4】：

已知的 Ruby 错误：

http://lindsaar.net/2007/12/9/rbuf_filltimeout-error

【讨论】：