DBF6 – SMS MT has been rejected by operator. User must send MO to unblock messages

DBF6 is a SMS 365, enterprise service status code (response code), which means ‘The SMS MT has been rejected by operator. User must send MO to unblock messages’. This indicates that the end-user has restrictions set on their account, until such time they opt into a service provided by the service number.

Possible Reasons for a DBF6 response

A reason why the DBF6 response is returned, along with the actions that should be taken, are detailed below:

Category

Description

Action

End User

End-user is not registered to the service

The End-user has not opted into the service being provided

The End-user should use the appropriate MO opt-in process associated with the service provider, in order to receive the SMS MT messages.

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