Federated Email Service (FES) Migration 

Marketo Engage is in the process of migrating to the Adobe Federated Email Service (FES), a centralized email-sending solution designed to streamline and standardize email delivery across Adobe's various teams and products. Over the next couple of months, all Marketo Engage subscriptions will be on FES, making email delivery more reliable, stable, and easier to support at scale.

What do you need to do?

If you do not have a Branded Return-Path configured during the initial set up of the purchased Dedicated IP, or a Branded Return-Path SKU, no actions are needed.
 

Users who have a Branded Return-Path

For those who had a Branded Return-Path configured during the initial setup of a purchased Dedicated IP, or a Branded Return-Path SKU, you must update the MX record for that specific Branded Return-Path domain.

Note: this is not the Branded Domains for your links.

Ask your IT team to update the MX record for your branded return path using the values listed below for your pod. If you're unsure which pod your subscription is on, see: identify your data center.

The migration has been separated into two cohorts. The first cohort has been completed. 

Cohort One

Cohort Two

Expected service impacts

The MX record update is required to ensure Adobe continues to receive and process Asynchronous bounce events on your behalf. No additional service impacts are expected. 

Schedule

To receive the full benefits of the FES migration, Branded Return-Path users should make this change by the dates below.

Cohort One: Make the change by July 17, 2026.

Cohort Two: Make the change by August 31, 2026.

If you don’t update your records by the date(s) listed:

• Your subscription won’t be able to process Asynchronous Hard Bounces (which typically amounts to less than 1% of messages sent).
• Very low chance of Deliverability impacts.
• When you do update the MX record and we begin to process async bounces again, the applicable recipients will automatically be identified and marked as a Hard Bounce.

Updates and support

For the latest updates, bookmark this post. If you have any questions, contact Adobe Support via the Support portal in the Admin Console or Experience League.