Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Tue, 23 Sep 2008 11:11:35 +0400 (MSD)

The original message was received at Tue, 23 Sep 2008 11:11:27 +0400 (MSD)
from [221.204.63.36]

   ----- The following addresses had permanent fatal errors -----
[email-masked]
    (reason: 554 5.7.1 Content-Policy reject msg: Message rejected under suspicion of spam.; S8224817AbYIWHL3)
    (expanded from: <[email-masked]>)

   ----- Transcript of session follows -----
... while talking to mx1.yandex.ru.:
>>> DATA
<<< 554 5.7.1 Content-Policy reject msg: Message rejected under suspicion of spam.; S8224817AbYIWHL3
554 5.0.0 Service unavailable