Private Email Relay rejects registered & authenticated sender (550 unauthorized)

We use Sign in with Apple. Emails to @privaterelay.appleid.com bounce with "550 5.1.1 <...@send-subdomain>: unauthorized sender" for 4+ days.

Setup:

  • Sending via Resend (Amazon SES, eu-west-1)
  • From: siparis @ truefriends.com.tr, envelope: send.truefriends.com.tr
  • All four Email Sources show green SPF in Certificates, IDs & Profiles:
    • truefriends.com.tr (Domain)
    • send.truefriends.com.tr (Domain)
    • siparis @ truefriends.com.tr (Email)
    • *@send.truefriends.com.tr (Email wildcard) — added today, no effect
  • Test mail to non-Apple inbox: spf=pass, dkim=pass (d=truefriends.com.tr matches From), dmarc=pass. So full authentication is verified.

Filed Feedback Assistant + Developer Support case 102902232938 — Tier 1 deflected to Feedback. Waiting for engineering response.

Has anyone resolved a case where portal shows green ✓ but Relay still rejects as unauthorized? Internal sync issue?

Answered by DTS Engineer in 891561022

Hi @hsnzsy,

Has anyone resolved a case where portal shows green ✓ but Relay still rejects as unauthorized? Internal sync issue?

Please verify that the sender domain is properly configured with SPF, DKIM, and DMARC records. To learn more, see below:

Configure private email relay service

https://developer.apple.com/help/account/capabilities/configure-private-email-relay-service/

Communicating using the private email relay service

https://developer.apple.com/documentation/signinwithapple/communicating-using-the-private-email-relay-service

If you're unable to resolve the issue, please see the following forums post, and reply with your Feedback ID:

Gathering required information for troubleshooting Private Email Relay with Sign in with Apple

https://developer.apple.com/forums/thread/794191

Cheers,

Paris X Pinkney |  WWDR | DTS Engineer

Hi @hsnzsy,

Has anyone resolved a case where portal shows green ✓ but Relay still rejects as unauthorized? Internal sync issue?

Please verify that the sender domain is properly configured with SPF, DKIM, and DMARC records. To learn more, see below:

Configure private email relay service

https://developer.apple.com/help/account/capabilities/configure-private-email-relay-service/

Communicating using the private email relay service

https://developer.apple.com/documentation/signinwithapple/communicating-using-the-private-email-relay-service

If you're unable to resolve the issue, please see the following forums post, and reply with your Feedback ID:

Gathering required information for troubleshooting Private Email Relay with Sign in with Apple

https://developer.apple.com/forums/thread/794191

Cheers,

Paris X Pinkney |  WWDR | DTS Engineer

Private Email Relay rejects registered & authenticated sender (550 unauthorized)
 
 
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