Hi, Our company integrated ‘Sign In With Apple’.
To use private email relay service, we added our domain in WWDR Configure Sign in with Apple for Email Communication part.
We just added one domain in ‘Domains and Subdomains’ and no email in ‘Email Addresses’, because our emails are using same domain.
Our domain was successfully added, the status is green check with SPF.
We do not use 3rd party email service. We only use Gmail.
We successfully sent emails to 3 test users with 3 email addresses ( eg. help@company.com, contact@company.com etc ).
However, replying to the email always fail on specific case.
For example, replying from a@user.com to help@company.com (more precisely, help_at_company_com_userUniqueNumber_randomNumber@privaterelay.appleid.com) always fail with ‘550 5.1.1 Relay not allowed’ error.
We waited about 5 days and tried again, but the result was same.
All other cases work well.
I think private email relay service missed syncing some cases.
How can I solve this problem?