Unable to send email to Apple privaterelay email - Sep 2022

Hi,

It seems like, currently, there is no way to send email to Apple privaterelay email right now. It was working fine previously. I tried to send an email to my privaterelay email and also my friends' (3 emails) and no one can get a message. I tested to send out an email to privaterelay email on many email providers (gmail, outlook, mailgun), but all channels are failed!

Outlook said:

Your message to ...@privaterelay.appleid.com couldn't be delivered.

... wasn't found at privaterelay.appleid.com.

Gmail said:

Address not found

Your message wasn't delivered to ...@privaterelay.appleid.com because the address couldn't be found, or is unable to receive mail.

Mailgun said:

unauthorized sender

This issue on 4 apple privaterelay emails we have. Not sure how can we fix this? It was working fine previously (last month - Aug 2022). Please kindly advise. Thank you.

Best regards,

Benjaporn B.