Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Thu, 4 Sep 2008 04:26:32 +0400 (MSD)

The original message was received at Thu, 4 Sep 2008 04:26:23 +0400 (MSD)
from 189-94-150-189.3g.claro.net.br [189.94.150.189]

   ----- The following addresses had permanent fatal errors -----
<[email-masked]>
    (reason: 550 5.7.1 Message rejected.)

   ----- Transcript of session follows -----
... while talking to [62.148.142.89]:
>>> DATA
<<< 550 5.7.1 Message rejected.
554 5.0.0 Service unavailable