BIP publisher email unable to send to icloud candidate email

Summary:

Hi, we are using BIP jobs to trigger emails to new hires based on task completion in journeys and recently BIP email is getting failed to deliver to icloud domain email addresses.

Any suggestions?

Content (please ensure you mask any confidential information):

Delivery has failed to these recipients or groups:

zzzzzz@icloud.comThere's a problem with the recipient's mailbox. Please try resending the message. If the problem continues, please contact your email admin.

Diagnostic information for administrators:

Generating server: p00-icloudmta-smtpin-us-west-1a-60-percent-11.p00-icloudmta-smtpin-vip.icloud-mail-production.svc.kube.us-west-1a.k8s.cloud.apple.com

zzzzzz@icloud.com