Delayed Mail (still being retried)

This is the mail system at host z.lalande.com.br.

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Your message could not be delivered for more than 4 hour(s).
It will be retried until it is 5 day(s) old.

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

<[email protected]>: host mx.uol.com.br[200.147.36.15] said: 450
    4.7.1 Client host rejected: cannot find your hostname, [162.243.162.72] (in
    reply to RCPT TO command)
Reporting-MTA: dns; z.lalande.com.br
X-Postfix-Queue-ID: 9E4674331C
X-Postfix-Sender: rfc822; [email protected]
Arrival-Date: Wed, 15 Oct 2014 11:25:54 -0300 (BRT)

Final-Recipient: rfc822; [email protected]
Original-Recipient: rfc822;[email protected]
Action: delayed
Status: 4.7.1
Remote-MTA: dns; mx.uol.com.br
Diagnostic-Code: smtp; 450 4.7.1 Client host rejected: cannot find your
    hostname, [162.243.162.72]
Will-Retry-Until: Mon, 20 Oct 2014 12:25:54 -0200 (BRST)
Return-Path: <[email protected]>
Received: from z.lalande.com.br (localhost [127.0.0.1])
	by z.lalande.com.br (Postfix) with ESMTPA id 9E4674331C
	for <[email protected]>; Wed, 15 Oct 2014 11:25:54 -0300 (BRT)
MIME-Version: 1.0
Content-Type: multipart/alternative;
 boundary="=_2ac009bc7c33e2524c757458c194ddd9"
Date: Wed, 15 Oct 2014 11:25:54 -0300
From: [email protected]
To: [email protected]
Subject: kmlkml
Message-ID: <[email protected]>
X-Sender: [email protected]
User-Agent: Roundcube Webmail/0.9.5