面对问题 SocketError (getaddrinfo: Name or service not known) in spree

Facing issue SocketError (getaddrinfo: Name or service not known) in spree

您好,我已经在我的 gem 文件中包含给定 gem:

gem 'spree_mail_settings', github: 'spree-contrib/spree_mail_settings', branch: '3-0-stable'

并在配置中的 spree-admin 中进一步完成设置 < 邮件方法设置

当我下订单时出现错误

2016-05-10T07:16:32.164733+00:00 app[web.1]: 2016-05-10T07:16:32.164734+00:00 app[web.1]: [ActiveJob] [ActionMailer::DeliveryJob] [9526835c-d5e7-4434-b716-a98b68b75da1] Performed ActionMailer::DeliveryJob from Inline(mailers) in 471.29ms 2016-05-10T07:16:32.164735+00:00 app[web.1]: Completed 500 Internal Server Error in 1395ms (ActiveRecord: 179.9ms) 2016-05-10T07:16:32.168574+00:00 app[web.1]: 2016-05-10T07:16:32.168583+00:00 app[web.1]: SocketError (getaddrinfo: Name or service not known): 2016-05-10T07:16:32.168583+00:00 app[web.1]: vendor/ruby-2.2.4/lib/ruby/2.2.0/net/smtp.rb:541:in initialize' 2016-05-10T07:16:32.168584+00:00 app[web.1]:<br> vendor/ruby-2.2.4/lib/ruby/2.2.0/net/smtp.rb:541:inopen' 2016-05-10T07:16:32.168584+00:00 app[web.1]:
vendor/ruby-2.2.4/lib/ruby/2.2.0/net/smtp.rb:541:in tcp_socket' 2016-05-10T07:16:32.168585+00:00 app[web.1]:<br> vendor/ruby-2.2.4/lib/ruby/2.2.0/net/smtp.rb:551:inblock in do_start' 2016-05-10T07:16:32.168585+00:00 app[web.1]:
vendor/ruby-2.2.4/lib/ruby/2.2.0/timeout.rb:88:in block in timeout' 2016-05-10T07:16:32.168586+00:00 app[web.1]:<br> vendor/ruby-2.2.4/lib/ruby/2.2.0/timeout.rb:98:incall' 2016-05-10T07:16:32.168586+00:00 app[web.1]:
vendor/ruby-2.2.4/lib/ruby/2.2.0/timeout.rb:98:in timeout' 2016-05-10T07:16:32.168587+00:00 app[web.1]:<br> vendor/ruby-2.2.4/lib/ruby/2.2.0/net/smtp.rb:550:indo_start' 2016-05-10T07:16:32.168587+00:00 app[web.1]:
vendor/ruby-2.2.4/lib/ruby/2.2.0/net/smtp.rb:520:in start' 2016-05-10T07:16:32.168587+00:00 app[web.1]:<br> vendor/bundle/ruby/2.2.0/gems/mail-2.6.4/lib/mail/network/delivery_methods/smtp.rb:113:indeliver!' 2016-05-10T07:16:32.168588+00:00 app[web.1]:
vendor/bundle/ruby/2.2.0/bundler/gems/spree_mail_settings-d416a1e35589/lib/spree/core/mail_method.rb:8:in `deliver!' 2016-05-10T07:16:32.168588+00:00 app[web.1]:

请指导我为什么会遇到这个问题以及需要哪些设置。

像这样在管理部分进行设置;