Vice Admiral
Vice Admiral


Because of the issue with Apple and killing email messages from mail servers that use DSN. My question is can I disable DSN and still receive NDR?

Labels (1)
2 Replies
Micro Focus Expert
Micro Focus Expert


As far as I'm aware the NDR is separate from DSN. I personally don't use DSN as I've had issues in the past. I still receive Non-Delivery Reports if delivery has failed e.g. the mailbox no longer exists.

Hope that helps.

Laura Buckley

Views/comments expressed here are entirely my own.
If you find this post helpful, please show your appreciation and click on "Like" below...
Knowledge Partner Knowledge Partner
Knowledge Partner

In article <>, Kirk White
> My question is can I disable DSN and still receive NDR?

NDR is a part of much older part of the SMTP standard set than DSN. I
was getting NDRs long before we even had DSN as an option.

NDRs were specified as a part of return codes way back in RFC 821

DSN was introduced 21 years later in RFC3461 (2003)

Andy of in Toronto
Knowledge Partner
If you find a post helpful and are logged in the Web interface, please
show your appreciation by clicking on the star below. Thanks!

“i’ve sworn an oath of solitude til the blight is purged from these lands”
Andy of Konecny Consulting in Toronto
Knowledge Partner Profile
If you find a post helpful, click the Like button below. Thanks!
The opinions expressed above are the personal opinions of the authors, not of Micro Focus. By using this site, you accept the Terms of Use and Rules of Participation. Certain versions of content ("Material") accessible here may contain branding from Hewlett-Packard Company (now HP Inc.) and Hewlett Packard Enterprise Company. As of September 1, 2017, the Material is now offered by Micro Focus, a separately owned and operated company. Any reference to the HP and Hewlett Packard Enterprise/HPE marks is historical in nature, and the HP and Hewlett Packard Enterprise/HPE marks are the property of their respective owners.