This is the mail system at host voina2.voina.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

<support@voina.ru>: host mail.goodoo.ru[62.105.135.42] said: 450 4.7.1 Client
    host rejected: cannot find your hostname, [83.222.2.209] (in reply to RCPT
    TO command)

Reporting-MTA: dns; voina2.voina.ru
X-Postfix-Queue-ID: 05269700BEF
X-Postfix-Sender: rfc822; fristin@bk.ru
Arrival-Date: Tue, 16 Jul 2013 23:23:58 +0400 (MSK)

Final-Recipient: rfc822; support@voina.ru
Original-Recipient: rfc822;support@voina.ru
Action: failed
Status: 4.7.1
Remote-MTA: dns; mail.goodoo.ru
Diagnostic-Code: smtp; 450 4.7.1 Client host rejected: cannot find your
    hostname, [83.222.2.209]