The original message was received at Mon, 13 Feb 2017 08:21:19 +0700 (KRAT)
from mail.kras-abs.ru [185.124.155.172]

   ----- The following addresses had permanent fatal errors -----
<caries@gmail.com>
    (reason: 550-5.7.1 [185.124.155.172      12] Our system has detected that this message is)

   ----- Transcript of session follows -----
... while talking to gmail-smtp-in.l.google.com.:
DATA
<<< 550-5.7.1 [185.124.155.172      12] Our system has detected that this message is
<<< 550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail,
<<< 550-5.7.1 this message has been blocked. Please visit
<<< 550-5.7.1  https://support.google.com/mail/?p=UnsolicitedMessageError
<<< 550 5.7.1  for more information. r128si5261221lfr.351 - gsmtp
554 5.0.0 Service unavailable
Reporting-MTA: dns; mx0.kras-abs.ru
Received-From-MTA: DNS; mail.kras-abs.ru
Arrival-Date: Mon, 13 Feb 2017 08:21:19 +0700 (KRAT)

Final-Recipient: RFC822; caries@gmail.com
Action: failed
Status: 5.7.1
Remote-MTA: DNS; gmail-smtp-in.l.google.com
Diagnostic-Code: SMTP; 550-5.7.1 [185.124.155.172      12] Our system has detected that this message is
Last-Attempt-Date: Mon, 13 Feb 2017 08:21:21 +0700 (KRAT)
Return-Path: <test@kras-abs.ru>
Received: from mail.kras-abs.ru (mail.kras-abs.ru [185.124.155.172])
	(authenticated bits=0)
	by mx0.kras-abs.ru (8.14.4/8.14.4) with ESMTP id v1D1LJSg038636
	for <caries@gmail.com>; Mon, 13 Feb 2017 08:21:19 +0700 (KRAT)
	(envelope-from test@kras-abs.ru)
MIME-Version: 1.0
Date: Mon, 13 Feb 2017 09:21:19 +0800
From: test <test@kras-abs.ru>
To: <caries@gmail.com>
Subject: test
Message-ID: <c9e040ecfe9110fdb4a83ba86c4e0707@mail.kras-abs.ru>
X-Sender: test@kras-abs.ru
User-Agent: Roundcube Webmail/0.8.6