Rails 5.2 Net::SMTPAuthenticationError - 535 Authentication failed: account disabled When Sending Email (Localhost and Heroku)

Question

I'm trying to get a Rails 5.2 mailer working, but am coming across a Net::SMTPAuthenticationError - 535 Authentication failed: account disabled error on both localhost and my Heroku production environment.

The mailer looks like this:

class AdminNotificationsMailer < ApplicationMailer
  default from: "liz@linchpinindustries.com"

  def new_rfp(rfp)
    @rfp = rfp
    mail(
      :to => "liz@linchpinindustries.com",
      :subject => 'New RFP Alert!'
    )
  end

  def new_contact_us(contact)
    @contact = contact
    mail(
      to: "liz@linchpinindustries.com",
      subject: 'New Contact Us Submission on LPI'
    )
  end

end

With the trigger in my rfp#create action (for the first mailer, the new_rfp one):

def create
    @rfp = Rfp.new(rfp_params)

    respond_to do |format|
      if @rfp.save!
        AdminNotificationsMailer.new_rfp(@rfp).deliver
        format.html { redirect_to root_path, notice: "Thanks for your request!  We'll get back to you ASAP.  Stay tuned!" }
        format.json { render :show, status: :created, location: @rfp }
      else
        format.html { render :new }
        format.json { render json: @rfp.errors, status: :unprocessable_entity }
      end
    end
  end

I have provisioned Sendgrid and double checked my username and password with puts (it is correct on localhost and production).

I have the following in my environment.rb:

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

我请教类似的帖子这个和这个，但没有什么工作。

我被正式难住了。谁能看出为什么会发生此错误？

Answer 1

您设置中的所有内容看起来都是正确的，所以这不仅仅是简单的

Net::SMTPAuthenticationError - 535 Authentication failed: account disabled

无论出于何种原因，您的帐户都是如此disabled。与 Sendgrid 检查您的帐户是否已启动并正常运行。

Answer 2

我收到了类似的错误消息，问题是我在 sendgrid 上打开了 2FA 身份验证，但没有意识到在执行此操作时必须更新应用程序中的配置。

现在，您必须提供自定义用户名和密码，username = "apikey"而密码是您的 api 密钥

ActionMailer::Base.smtp_settings = {
  domain: 'YOUR_DOMAIN.COM',
  address:        "smtp.sendgrid.net",
  port:            587,
  authentication: :plain,
  user_name:      'apikey',
  password:       ENV['SENDGRID_API_KEY']
}

这篇文章帮助我找到了解决方案。