Email delivery failure refers to when an email message fails to reach its intended recipient or is not successfully delivered to their inbox. Instead of reaching the recipient's mailbox, the email encounters an issue during the delivery process and is returned to the sender or discarded by the...
Applies To Outlook.com When you send an email and receive a delivery failure message, there could be several reasons. We've listed the most common error messages below, along with suggested resolutions. Select an error below to see more information. ...
Review the Rendering Failure event notifications to find out why Amazon SES doesn't deliver an email when you use the SendTemplatedEmail operation. After you set up Rendering Failure event notifications, you receive an Amazon SNS notification when a templated email delivery fails. The notification ...
Check your application's logs to ensure that there wasn't an issue (for example, an authentication failure or an issue with the format of the email message). If you provide two different addresses for envelope from and body from, they must both be approved senders or the mail will be rej...
For more information, see Fix email delivery issues for error code 5.1.0 in Exchange Online. 5.1.1 Bad destination mailbox address This failure might be caused by the following conditions: The recipient's email address was entered incorrectly by the sender. The recipient's email address doesn...
When it fails to deliver the message to the destined inbox, it sends a message to your inbox stating the failure and its cause. Usually, these messages come from an address that looks like this -mailer-daemon@xyzcompany.com. Here is how a message from mail delivery subsystem looks like. ...
For more information, seeFix email delivery issues for error code 5.1.0 in Exchange Online. 5.1.1Bad destination mailbox addressThis failure might be caused by the following conditions: The recipient's email address was entered incorrectly by the sender. ...
For more information, seeFix email delivery issues for error code 5.1.0 in Exchange Online. 5.1.1Bad destination mailbox addressThis failure might be caused by the following conditions: The recipient's email address was entered incorrectly by the sender. ...
If the delivery failure error is sent to us by your email service provider, a notification is added to the transaction stating the email delivery failed. Based off of your description of what's happening, it sounds like the recipient's email service is sendi...
421 4.3.0 Mail system failure, closing transmission channel 451 Server error An unexpected error has occurred during the SMTP conversation. 451 Error in Processing An unexpected error has occurred during the SMTP conversation. 452 System storage error The server is unable to persist the message in...