We have collected information about Email Delivery Status Codes for you. Follow the links to find out details on Email Delivery Status Codes.
http://emailaddressmanager.com/tips/codes.html
The first digit gives the status of the email message: 2 means the email was succesfully sent ; 4 means there was a temporary problem while sending the email (your email server may try to send it again or you have to resend it, depending on your server settings).
https://www.iana.org/assignments/smtp-enhanced-status-codes/smtp-enhanced-status-codes.xhtml
82 rows · Network and Routing Status: The networking or routing codes report status about the …
https://serversmtp.com/smtp-error/
46 rows · System status message or help reply. It comes with more information about the server. 214. …
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
If the steps in this section don't fix the problem for you, contact your email admin and refer them to the information in this topic so they can try to resolve the issue for you. Solution 1: Confirm the recipient's email address. It sounds too simple, but the wrong email …
https://support.microsoft.com/en-us/help/256321/enhanced-status-codes-for-delivery-rfc-1893
Apr 19, 2018 · The codes space defined is intended to be extensible only by standards track documents. Mail system specific status codes should be mapped as close as possible to the standard status codes. Servers should send only defined, registered status codes. System specific errors and diagnostics should be carried by means other than status codes.
https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-4-4-7-in-exchange-online
The email admins in the destination domain will need to investigate the issue. Possible solutions might include: Stop blocking messages from Exchange Online or specifically allow messages from senders in your domain. Contact the support channels for their email server or service. Microsoft support might also be able to help. I'm an email admin.
https://support.forcepoint.com/KBArticle?id=Why-is-email-not-being-delivered
Oct 25, 2016 · Delivery Status Codes RFC 1893, Section 2 The class sub-code provides a broad classification of the status. The enumerated values in the class are defined as: 2.X.X Success. Success specifies that the DSN is reporting a positive delivery action. Detail sub-codes may provide notification of transformations required for delivery.
https://answers.microsoft.com/en-us/outlook_com/forum/oemail-osend/constant-delivery-status-notification-failure/9441330c-2664-45f5-b8f1-685dc8ce155e
Jan 14, 2014 · Last month I tried to send an email to a friend from my hotmail account. I received a Delivery Status Notification (Failure) reply from *** Email address is removed for privacy ***. Since then, I have received constant Failure replies - sometimes up to 40 per day.
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