Undeliverable Messages
There are many reasons an email message may be undeliverable and bounce back to the sender. Some examples of more than
850 known variables of mail servers bounced formats are as follows:
- Nondeliverable mail: The user's email name is not found
- Returned mail: Host unknown. Addresses had permanent fatal errors
- Delivery problems with your mail. The domain does not exist?
- Error - Out of office or vacation replies....
- Message Failure - Unknown user: or mail box full
- Undeliverable mail - User maildir is over quota!
- Return mail: Recipient is not in the address book
- Failure notice: Name server: host not found. This is a permanent error.
- Return mail notice:
We have not been able to deliver this message for 24 hours
Things to try when a message is undeliverable
If the mail message was sent, but a message came back saying it could not be delivered for one reason or another, try one of the following:
- Check your sent items box within your mail client and then open the message that you tried to send and then try resending the message.
- Verify you typed out the full email address in the correct location without using an address book. Double check the spelling of the recipient's email. Be sure there are no spaces or commas in the email address and that the spelling is correct.
- Contact the owner of the email address to verify it is valid (most problems relate to invalid addresses). Check to be sure that the email address of the recipient has not changed or he/she has not closed their email account.
- If you are still receiving returned email, ask the recipient to contact their ISP for assistance,
- The recipient's mail server may be down. Wait a while and attempt to send the message again.
- If sending an email with a large attachment, attempt to send another without any attachment. See Email Attachments for more information.
- If you see messages regarding "Too many hops" on servers outside our network, there is unfortunately nothing we can do. This is because that system is too far off the Internet backbone.
Note: Email messages sent from specific domains may sometimes be blocked due to spam that orinates from their domain. These issues are generally resolved when the owner of the domain takes action to eliminate the person(s) responsible for sending the spam.
Receiving undeliverable message but you have not sent email!
If you receive a notice that your email is undeliverable, yet you have not sent the email(s), or the undeliverable notice that you receive might indicates that the email could not be delivered because the email is infected by one of the W32.Klez worm variants, your computer may be infected with the W32.Klez worm. Click here for more information.
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