The mail reurned with an error:
Delivery to the following recipient failed permanently:
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554 delivery error: dd This user doesn't have a yahoo.fr account (
or9@yahoo.fr) [-5] - mta1003.mail.ird.yahoo.com (state 18).