Cornell made a configuration change to Lyris E-lists in January 2026 to bring posts sent by email into better alignment with DMARC security policy enforcement. 

E-lists that include non-“@cornell.edu” members and to which members post by email were affected by this change. 

What Changes Were Made to E-list Posts from Affected Lists?

In email posts coming from affected E-lists (that is, from E-lists including non-“@cornell.edu” member addresses and where posts are made through email), note that:

• The From: line—which formerly displayed an administrative “bounce” address and the email address of the “poster”—will now show the posting address of the E-list.
• An informational comment at the beginning of the email will display the name and email address of the E-List poster.

The change will not affect how the Reply and Reply All options in email clients behave when responding to email posts sent through e-lists.

E-list Email Post Examples

For example, an email sent to the E-list “example-L@cornell.edu” by list member “ezra@cornell.edu” before the change looked like this:

From: bounce-123456789-987654@list.cornell.edu on behalf of Ezra Cornell <ezra@cornell.edu>
Subject: Cornell was founded 1865
To: EXAMPLE-L <example-L@list.cornell.edu>
----
First line of the original email…

After the change, the same email post looks like this:

From: example-L@list.cornell.edu
Subject: Cornell was founded 1865
To: example-L@list.cornell.edu
----
(Posted by Ezra Cornell <ezra@cornell.edu>)

First line of the original email…

For More Information

To learn more about the general project to better protect Cornell email using DMARC policies, visit Cornell Moves Forward on DMARC Enforcement to Prevent Email Fraud.