Send a rejection email when the incoming email couldn't be processed.

1 files changed, 35 insertions, 0 deletions

diff --git a/app/mailers/email_rejection_mailer.rb b/app/mailers/email_rejection_mailer.rb
new file mode 100644
index 00000000000..f29c4e052fc
--- /dev/null
+++ b/app/mailers/email_rejection_mailer.rb
@@ -0,0 +1,35 @@
+class EmailRejectionMailer < ActionMailer::Base
+  add_template_helper ApplicationHelper
+  add_template_helper GitlabMarkdownHelper
+
+  helper_method :current_user, :can?
+
+  default from:     "#{Gitlab.config.gitlab.email_display_name} <#{Gitlab.config.gitlab.email_from}>"
+  default reply_to: "#{Gitlab.config.gitlab.email_display_name} <#{Gitlab.config.gitlab.email_reply_to}>"
+
+  def rejection(reason, original_raw, can_retry = false)
+    @reason = reason
+    @original_message = Mail::Message.new(original_raw)
+
+    headers = {
+      to: @original_message.from,
+      subject: "[Rejected] #{@original_message.subject}"
+    }
+
+    headers['Message-ID'] = SecureRandom.hex
+    headers['In-Reply-To'] = @original_message.message_id
+    headers['References'] = @original_message.message_id
+
+    headers['Reply-To'] = @original_message.to.first if can_retry
+
+    mail(headers)
+  end
+
+  def current_user
+    nil
+  end
+
+  def can?
+    false
+  end
+end