Не могу отправить почту пишет : retry timeout exceeded

Slackware 10.1
Exim 4.50
стоят настройки
rfc1413_hosts = *
rfc1413_query_timeout = 30s
пробовал ставить = 60s, все равно не получается
This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

tamplateuser@ukr.net
SMTP error from remote mailer after RCPT TO:<tamplateuser@ukr.net>:
host mxs.ukr.net [212.42.65.72]: 451 Advanced host checking in progress, try later:
retry timeout exceeded

------ This is a copy of the message, including all the headers. ------

Return-path: <user@example.net.ua>
Received: from user@example.net.ua ([192.168.1.3] helo=localhost)
by example.net.ua with esmtp (Exim 4.50)
id 1Dius3-0000z9-5Z
for tamplateuser@ukr.net; Thu, 16 Jun 2005 16:57:27 +0300
Date: Thu, 16 Jun 2005 16:53:18 +0300
From: Mailer <user@example.net.ua>
X-Mailer: The Bat! (v3.0) Professional
Reply-To: Mailer <user@example.net.ua>
Organization: Mailer
X-Priority: 3 (Normal)
Message-ID: <1875493587.20050616165318@wildcat.net.ua>
To: tamplateuser@ukr.net
Subject: test
MIME-Version: 1.0
Content-Type: text/plain; charset=Windows-1251
Content-Transfer-Encoding: 8bit