Mail - server code AUTHENTIFICATION FAILURE
Yahoo email connection failure
Posted on Oct 11, 2026 3:17 PM
Mail - server code AUTHENTIFICATION FAILURE
Posted on Oct 11, 2026 3:17 PM
Oct 11, 2026 6:25 PM in response to Lance Simpson
You need to contact Yahoo support. Yahoo requires 2 factor authentication, and you probably are not following the correct instructions to authenticate.
Originally posted at discussions.apple.com/thread/256374394