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Error: 4.4.7 Non-Delivery Message
Problem: When you send an email, you receive
a 4.4.7 error message: Non-Delivery Receipt (NDR) message
Solution: A 4.4.7 NDR message usually indicates
a problem on the receiving server; check the validity of the recipient's
address. You can also perform an MX
lookup on the receiving
domain to determine if the receiving server is configured to receive
messages correctly.
A 4.4.7 NDR message can also indicate that a message header limit
has been reached on a remote server or that some other protocol
timeout has occurred while communicating with the remote server.
It may be necessary to reduce the number of recipients in the header
of the message for the host to which you are receiving this error.
If you then resend the message, it is placed in the queue again,
and if the receiving server is up, the message is delivered.
An example of the typical bounce-back NDR message is shown below:
-----Original Message-----
From: System Administrator
Sent: DateTime
To: 'Recipients_Name'
Subject: Undeliverable: Subject_Of_Original_Message
Your message did not reach some or all of the intended recipients.
Subject: Subject_Of_Original_Message
Sent: DateTime
The following recipient(s) could not be reached:
'Recipients_Name' on 3DateTime Could not deliver the message in
the time limit specified. Please retry or contact your administrator.
<FQDN_Of_Sending_Server#4.4.7>
Questions? Call us at (800) 967-3924 or send an email to our support team.




