diff --git a/app/jobs/scheduled/poll_mailbox.rb b/app/jobs/scheduled/poll_mailbox.rb
index 749dd67748e..7faf2cfb95d 100644
--- a/app/jobs/scheduled/poll_mailbox.rb
+++ b/app/jobs/scheduled/poll_mailbox.rb
@@ -43,6 +43,8 @@ module Jobs
           message_template = :email_reject_parsing
         when Email::Receiver::EmailLogNotFound
           message_template = :email_reject_reply_key
+        when Email::Receiver::BadDestinationAddress
+          message_template = :email_reject_destination
         when ActiveRecord::Rollback
           message_template = :email_reject_post_error
         when Email::Receiver::InvalidPost
diff --git a/config/locales/server.en.yml b/config/locales/server.en.yml
index 2f8e599452b..49029b469bc 100644
--- a/config/locales/server.en.yml
+++ b/config/locales/server.en.yml
@@ -1440,6 +1440,13 @@ en:
 
         The provided reply key is invalid or unknown, so we don't know what this email is in reply to. Contact a staff member.
 
+    email_reject_destination:
+      subject_template: "Email issue -- Bad Destination Address(es)"
+      text_body_template: |
+        We're sorry, but your email message to %{destination} (titled %{former_title}) didn't work.
+
+        None of the destination addresses are recognized by the forum. Please make sure that the forum is in the To: line (not CC or BCC), and that you are sending to the email address provided by the forum administrators.
+
     email_error_notification:
       subject_template: "Email issue -- POP authentication error"
       text_body_template: |