On this page, you'll find instructions and/or answers for some common issues experienced by customers of Road Runner's mail service.
What is this "Mail System Delivery Report" I got?
Some Road Runner customers are receiving messages that look like this:
From: Mail Administrator [mailto:Postmaster@mail.rr.com]
A likely cause of this message is that you sent a message to someone and you had "Receipt Requested" turned on, hoping to get an acknowledgement that your recipient received the message in question. Receipts such as this are also called "Delivery Status Notifications", and some mail systems are configured to not send receipts, due to local policy implemented there. What this message is telling you is that you sent a message with receipt requested to a site that does not provide such receipts.
Sent: Wednesday, January 30, 2008 4:24 PM
To: Customer Email Address Goes Here
Subject: Mail System Delivery Report
As part of the delivery process, your message was relayed to a machine which does not handle delivery status notifications. As a result, it is not possible to determine whether the message will get to its final destination.
Please reply to <Postmaster@mail.rr.com> if you feel this message to be in error.
I tried to send mail and it got returned saying "Not our Customer"; what gives?
This error message is not being generated by a Road Runner mail server.
Instead, some sites (such as comcast.net) choose the phrase "Not our Customer"
to indicate that the intended address does not exist at that domain; more
common phrases encountered in the same situation would be, for example,
"User Unknown", "Mailbox Not Found", "Address Does Not Exist", etc.
In short, the error "Not our Customer" means that the address to which you
tried to send mail does not exist at the remote domain.
What Can I Do About Spam I'm Receiving In My Road Runner Mailbox?
We have a webpage dedicated to this topic