Can't send email to private 550 5.1.1 unauthorized sender

I have add my domani and email address to Configure Sign in with Apple for Email Communication (https://developer.apple.com/account/resources/services/configure) and it pass SPF already but when it send from server that i setup is had "Error Description : Permanament error. Please do not try again, according to the information returned by the other party to confirm the specific cause of the error. Cause:550 5.1.1 : unauthorized sender" a mail service is on Alibaba Cloud the email that i want to sending to is ending with @privaterelay.appleid.com

it that have any solve problem or i missing any thing else ?

Can't send email to private 550 5.1.1 unauthorized sender
 
 
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