Bug: SES feedback endpoint is missing from European Sovereign Cloud

Question

In EUSC, when setting up an identity in AWS SES, the section 'Custom MAIL FROM domain' is displayed, but it asks the user to configure an MX record with value:

10 feedback-smtp.eusc-de-east-1.amazonses.com

However, this endpoint does not exist:

$ dig feedback-smtp.eusc-de-east-1.amazonses.com

; <<>> DiG 9.20.18 <<>> feedback-smtp.eusc-de-east-1.amazonses.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 20842
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;feedback-smtp.eusc-de-east-1.amazonses.com. IN A

;; AUTHORITY SECTION:
amazonses.com.          900     IN      SOA     ns-1130.awsdns-13.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400

;; Query time: 6 msec
;; SERVER: 192.168.2.254#53(192.168.2.254) (UDP)
;; WHEN: Sat Mar 21 20:52:14 CET 2026
;; MSG SIZE  rcvd: 153

For comparison, this is eu-north-1:

$ dig feedback-smtp.eu-north-1.amazonses.com

; <<>> DiG 9.20.18 <<>> feedback-smtp.eu-north-1.amazonses.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46310
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;feedback-smtp.eu-north-1.amazonses.com.        IN A

;; ANSWER SECTION:
feedback-smtp.eu-north-1.amazonses.com. 60 IN A 13.48.75.159
feedback-smtp.eu-north-1.amazonses.com. 60 IN A 13.49.142.118
feedback-smtp.eu-north-1.amazonses.com. 60 IN A 13.49.172.75

;; Query time: 16 msec
;; SERVER: 192.168.2.254#53(192.168.2.254) (UDP)
;; WHEN: Sat Mar 21 20:49:21 CET 2026
;; MSG SIZE  rcvd: 115

This appears to me as a bug, where either the requested dns config points to the wrong hostname, or the smtp feedback server has not been set up.

re:Post Agent · Answer

Thank you for reporting this issue. Based on the information available, this does appear to be a configuration gap in the AWS European Sovereign Cloud (EUSC) region.

When setting up a custom MAIL FROM domain in Amazon SES, the service requires you to publish an MX record pointing to a region-specific feedback endpoint. This endpoint is used by SES to receive bounce and complaint notifications from email providers. SES automatically specifies the correct feedback endpoint for each region during the custom MAIL FROM domain configuration process.

In standard AWS Regions, these feedback endpoints follow the pattern `feedback-smtp.[region].amazonses.com` and are documented and functional. However, the AWS European Sovereign Cloud is a new, independent cloud infrastructure that is physically and logically separate from existing AWS Regions, with all components located within the EU.

Given that the EUSC is a distinct infrastructure with its own operational model and technical controls, it's possible that either:
1. The feedback endpoint infrastructure has not yet been fully deployed in this region, or
2. The endpoint naming convention or DNS configuration differs from standard AWS Regions due to the sovereign cloud's use of dedicated infrastructure, including dedicated Amazon Route 53 nameservers that exclusively use European top-level domains

I recommend opening a support case with AWS to report this issue, as this appears to be either a missing infrastructure component or a documentation/configuration error that needs to be addressed for SES to function properly with custom MAIL FROM domains in the European Sovereign Cloud region.  
**Sources**  
[Amazon Simple Email Service endpoints and quotas - AWS General Reference](https://docs.aws.amazon.com/general/latest/gr/ses.html)  
[Regions and Amazon SES - Amazon Simple Email Service](https://docs.aws.amazon.com/ses/latest/dg/regions.html)  
[Opening the AWS European Sovereign Cloud | AWS News Blog](https://aws.amazon.com/blogs/aws/opening-the-aws-european-sovereign-cloud/)

Vincent · Answer

Ah, the correct address is:
```
feedback-smtp.eusc-de-east-1.amazonses.eu
```
But it is still wrong on the AWS Console page

Bug: SES feedback endpoint is missing from European Sovereign Cloud

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