Error code : 451 4.4.62 Mail sent to the wrong Office 365 region(ATTR35) in Track and Trace logs

Products

• Email Security.cloud

Issue/Introduction

Sender is unable to send an email to recipient and is encountering error 451 4.4.62 Mail sent to the wrong Office 365 region(ATTR35).

Environment

Email Security.cloud

Resolution

The recipient mail server administrator should be contacted in such cases to investigate and fix issues on their end.