800-746-4726

RCN Knowledge Center Customer Center Contact Us


Introduction

A Mailer-Daemon message is a courtesy notification received when an email cannot be delivered

  • Your email is returned to you with an outline of the problem at the top

  • If a temporary failure, the email system attempts to deliver your message every 15 minutes for the next 5 days

  • If the message still does not get through, it is returned with a permanent failure error

Resolution Steps


Common Mailer-Daemon Messages:

  • Can't Create Output: the most common cause is a full recipient mailbox

  • Name Server Timeout: domain could not be found; check email address for typos

  • Deferred: connection timed out; recipient may have a filter in place

  • Host Unknown: check email address for typos

  • User Unknown: address does not exist; check the address


Additional Information
Commercial Agent Steps
Financial Agent Steps
Management Steps
Share
Subscribe
Enter your email address to receive a notification when the article is updated
Email Address
Subscribe
Unsubscribe
Share
To
Subject
Message
Send

Was this article helpful?
Thank you for your feedback