Почтовый ящик Кабинета ..@k66.ru Что делать?

Пользуюсь им второй день, половина писем приходящих выглядит так:

This is a warning message only.
Your message remains in the server queue,
the server will try to send it again.
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Message delivery to 'aubreyjeffrey@yahoo.com' delayed
SMTP module(domain @87.224.128.21:yahoo.com) reports:
connection with mx2.mail.yahoo.com is broken




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Received: from [87.224.222.253] (HELO grafit)
by k66.ru (CommuniGate Pro SMTP 4.3.5)
with SMTP id 891529 for aubreyjeffrey@yahoo.com; Fri, 02 Dec 2005 10:41:23 +0500
Message-ID: <00d601c5f703$04a7de40$fddee057@grafit>
From: "slava" <888@k66.ru>
To: "W JEFFREY" <aubreyjeffrey@yahoo.com>
Subject: Fw: GB
Date: Fri, 2 Dec 2005 10:41:18 +0500
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="----=_NextPart_000_00D3_01C5F72C.ED4E23B0"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2900.2180
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
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Почему это происходит? Что делать?
Спрашиваю тут т.к. телефон Кабинета постоянно занят, на письма отвечают медленно.