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troubleshooting Question

Exchange 2003 Remote host said: 550 5.1.1 User unknown

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gregbinns asked on
Microsoft Server Apps
13 Comments1 Solution1587 ViewsLast Modified:
Remote host said: 550 5.1.1 User unknown is returned when trying to send an email to this server
It has recently been set up and was receiving emils filne but not sending, when we got sending  working  we received no more emails.
Thank in advance
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