We have collected information about Delivery Failure Report Codes for you. Follow the links to find out details on Delivery Failure Report Codes.
https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/non-delivery-reports-in-exchange-online
Delivery has failed to these recipients or groups: [email protected] Your message wasn't delivered due to a permission or security issue. It might have been rejected by a moderator, the address might only accept email from certain senders, or another restriction might be preventing delivery.
https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-1-1-through-5-1-20-in-exchange-online
Their rule could have tried to send a copy of your message to a bad email address. If the recipient has such a rule, they'll need to correct the destination email address or remove the rule in order to prevent 5.1.x message delivery errors. Solution 4: Verify that your account hasn't been compromised. Did you send the original message at all?
https://answers.microsoft.com/en-us/outlook_com/forum/oemail-osend/delivery-failure/d1a95bad-2124-4edf-a1f0-ea1808e1cf30
May 10, 2017 · I'm getting Delivery Status Notification (Failure) messages to known good email addresses I sent to in previous days. The following is the Diagnostic-Code to the last Delivery Status Notification (Failure): 5.7.1 ... Based on the delivery failure that you have provided, you need to revise the message of the emails that you are going to send. ...
http://emailaddressmanager.com/tips/codes.html
X.7.1 Delivery not authorized, message refused X.7.2 Mailing list expansion prohibited X.7.3 Security conversion required but not possible X.7.4 Security features not supported X.7.5 Cryptographic failure X.7.6 Cryptographic algorithm not supported X.7.7 Message integrity failure
https://www.iana.org/assignments/smtp-enhanced-status-codes/smtp-enhanced-status-codes.xhtml
Persistent Transient Failure: A persistent transient failure is one in which the message as sent is valid, but persistence of some temporary condition has caused abandonment or delay of attempts to send the message. If this code accompanies a delivery failure report, sending in the future may be successful. (Standards track) G. Vaudreuil: IESG
https://help.socketlabs.com/docs/message-delivery-failure-codes
Message Delivery Failure Codes When messages bounce or fail in either the On-Demand service or in an On-Premise system, failure codes are provided in order to indicate the nature of the bounce or failure.
https://www.activexperts.com/sms-component/sms/gsmdeliveryreports/
SMS Delivery Reports using GSM Modems SMS Delivery Reports Introduction. Like most cell phones, GSM modems are able to check the delivery of a SMS message using delivery reports. If this option has been turned on, you will receive a delivery report for every message that was sent with the 'request delivery report' flag turned on.
https://support.office.com/en-us/article/Sent-email-in-Outlook-com-comes-back-delivery-failed-45e048ac-f7b1-4c0f-b525-081cb34f1062
Delivery failures, or emails that bounce or come back as undeliverable, can happen for several reasons. When you send an email and receive a delivery failure message, there could be several reasons.
https://community.spiceworks.com/how_to/939-ndr-non-delivery-receipts-codes-and-their-meanings
For info, the 4.x.x codes indicate a 'Persistent Transient Failure', in which some temporary problem is preventing delivery. The 5.x.x codes indicate a 'Permanent Failure', in which the mail will not be delivered in its current form.
https://www.ibm.com/support/knowledgecenter/en/SSWU4L/Mobile/imc_Mobile/Mobile_q_a_watson_assistant/SMS_delivery_status_codes_Karix_India.html
View a list of delivery status codes from Karix (mGage India). In case of an SMS delivery failure, if the status code is Permanent, do not attempt to resend the SMS message. What are the SMS delivery status codes for messages that are sent to India? ...
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