troubleshooting Question

O365 and Exchange 2016 recipient unable to receive internal emails

Avatar of Barry Fields
Barry FieldsFlag for United States of America asked on
ExchangeMicrosoft 365
6 Comments1 Solution117 ViewsLast Modified:
I have an Exchange 2016/O365 hybrid environment. We just added a new user, she can receive mail from outside the domain but cannot receive mail internally. Our Exchange server returns the following error;
Remote Server returned '550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found'. This user is on O365
Barry Fields
IT manager

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