[Fiware-lab-help] Returned mail: see transcript for details

[Mail Delivery Subsystem]

The original message was received at Sun, 2 Sep 2018 07:34:15 +0200
from 45-236-250-148.nossanetfibra.net.br [45.236.250.148]

   ----- The following addresses had permanent fatal errors -----
<baindhqs2x7qpb at abilene.it>
    (reason: 550 5.1.0 <baindhqs2x7qpb at abilene.it>: User unknown in local recipient table)

   ----- Transcript of session follows -----
... while talking to [127.0.0.1]:
>>> DATA
<<< 550 5.1.0 <baindhqs2x7qpb at abilene.it>: User unknown in local recipient table
554 5.0.0 Service unavailable
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