Почта и релэй сревер АГАВЫ

Выделенный сервер, виртуальные mailbox'ы, не могу отправить письмо на

ответное письмо от smtp

This is the mail system at host virtual.srv6.0x00.ru.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<davidova@vdm-plant.ru>: host cluster.relay.agava.net[89.108.67.9] said:
    550-Your Message rejected. 550-Please use your internet provider SMTP
    Server. 550 REASON: Bad PTR." (in reply to RCPT TO command)

Reporting-MTA: dns; virtual.srv6.0x00.ru
X-Postfix-Queue-ID: D2952ED064
X-Postfix-Sender: rfc822; 
Arrival-Date: Tue, 21 Dec 2010 14:35:58 +0300 (MSK)

Final-Recipient: rfc822; 
Original-Recipient: rfc822;davidova@vdm-plant.ru
Action: failed
Status: 5.0.0
Remote-MTA: dns; cluster.relay.agava.net
Diagnostic-Code: smtp; 550-Your Message rejected. 550-Please use your internet
    provider SMTP Server. 550 REASON: Bad PTR."

Return-Path: <info@masterform.su>
Received: from srv6.0x00.ru (localhost [127.0.0.1])
	by virtual.srv6.0x00.ru (Postfix) with ESMTP id D2952ED064
	for <davidova@vdm-plant.ru>; Tue, 21 Dec 2010 14:35:58 +0300 (MSK)
MIME-Version: 1.0
Content-Type: text/plain;
 charset=UTF-8;
 format=flowed
Content-Transfer-Encoding: 8bit
Date: Tue, 21 Dec 2010 14:35:58 +0300
From: =?UTF-8?Q?=D0=A1=D0=BE=D0=BA=D0=BE=D0=BB=D0=BE=D0=B2=D0=B0_=D0=A2?=
 =?UTF-8?Q?=D0=B0=D1=82=D1=8C=D1=8F=D0=BD=D0=B0?= <info@masterform.su>
To: <davidova@vdm-plant.ru>
Subject: test
Organization: =?UTF-8?Q?=D0=9E=D0=9E=D0=9E_=22=D0=9C=D0=B0=D1=81=D1=82?=
 =?UTF-8?Q?=D0=B5=D1=80_=D0=A4=D0=BE=D1=80=D0=BC=22?=
Message-ID: <ba591c9974c3327d6b36180827b6a37a@masterform.su>
X-Sender: 
User-Agent: RoundCube Webmail/0.4
X-Spam-Status: No, score=0.0 required=5.0 tests=UNPARSEABLE_RELAY
	autolearn=failed version=3.3.1
X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on srv6.localdomain
X-Virus-Scanned: clamav-milter 0.96.5 at srv6.localdomain
X-Virus-Status: Clean

 test

-- 
 С уважением,
 менеджер ООО "Ма�тер Форм"
 Соколова Тать�на
 Тел.: (8412) 25-20-06
 Фак�: (8412) 47-01-58
 www.masterform.su
 E-mail: 

Лог посфикса

Dec 21 08:56:07 srv6 postfix/smtp[15587]: 7A977E3010: to=<davidova@vdm-plant.ru>, relay=cluster.relay.agava.net[89.108.67.8]:25,
delay=0.86, delays=0.34/0.01/0.44/0.08, dsn=5.0.0, status=bounced (host cluster.relay.agava.net[89.108.67.8]
said: 550-Your Message rejected.
550-Please use your internet provider SMTP Server. 550 REASON: Bad PTR." (in reply to RCPT TO command))

Проблема в PTR запись моего сервера? мне как бы его провайдер установил :(