Re: Returned mail: User unknown

Michael <michael.setaazul@...>

What does this mean?
Sent from an unknown user ???
I have been getting this daily !

Michael UK

----- Original Message ------------------------------------------------------

From: thomashuber@...
To: ultralightdx@...
Sent: 25 June 2013 10:43
Subject: [ultralightdx] Returned mail: User unknown

The original message was received at 2013-06-25 05:51:53 -0400
from []

----- The following addresses had permanent fatal errors -----

-----Transcript of session follows -----
... while talking to
RCPT To:<thomashuber@...>
<<< 550 5.1.1 unknown or illegal alias: thomashuber@...
550 <thomashuber@...>... User unknown

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