To comply with increased email security standards, orgs are required to create and verify a Default No-reply address in Organization-Wide Email Address settings
When: This update was introduced with Summer ’24 and Salesforce is scheduled to enforce it in Winter ’25. To get the major release upgrade date for your instance, go to Trust Status, search for your instance, and click the maintenance tab
Why: The verified Default No-Reply organization-wide email address is used to send emails from your org. This update allows increased accountability for email deliverability
How: In order to comply with increased email security standards, some emails will fail to be sent when lacking a customer defined Default No-Reply Organization-Wide Email Address