ruby-on-rails – Heroku上的SendGrid失败

我把它放在我的config / environment.rb中：

ActionMailer::Base.smtp_settings = {
  :user_name => ENV["SENDGRID_USERNAME"],:password => ENV["SENDGRID_PASSWORD"],:domain => "my-sites-domain.com",:address => "smtp.sendgrid.net",:port => 587,:authentication => :plain,:enable_starttls_auto => true
}

我创建了这个类models / notifier.rb：

class Notifier < ActionMailer::Base

  def notify()
    mail( 
      :to => "my-email@gmail.com",:subject => "New Website Contact",:body => "body",:message => "message",:from => "website@my-sites-domain.com"
    )
  end

end

我把它放在另一个控制器发送电子邮件：

def contact
  Notifier.notify().deliver
  redirect_to("/",:notice => "We Have Received Your Request And Will Contact You Soon.")
end

当我部署并尝试发送电子邮件时,我收到此错误：

Net :: SMTPAuthenticationError(535身份验证失败：用户名/密码错误

我已完全设置发送网格,它说我准备发送电子邮件.

我还运行了heroku config –long来获取实际的密码和用户名并对其进行硬编码,这仍然给了我同样的错误.