delivery: Message contains invalid header

[Sergey Matveychuk]

Hello.

I've got a problem with delivery(1). When I try to use it with exim to
place messages to mail boxes I get 'Message contains invalid header'
error almost for every message. When I use LMTP transport, cyrus works
just fine and deliveries any message.
I don't understand what's wrong with headers. Here is one of messages
that cyrus-imapd rejected, started with a delivery error message (I've
masked emails and IPs):

  sem at xxx.ru
    local delivery failed

The following text was generated during the delivery attempt:

------ sem at xxx.ru ------

sem.INBOX: Message contains invalid header

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

Return-path: <sem at XXX.org>
Received: from [192.168.1.1] (helo=mail.xxx.ru)
        by mail.xxx.ru with esmtp (Exim 4.x)
        id 1HMSPR-000Ihn-Ot
        for sem at xxx.ru; Wed, 28 Feb 2007 20:16:09 +0300
Received: from [XXX.XXX.16.199] (helo=[192.168.0.4])
        by relay.xxx.ru with esmtpa (Exim 4.x)
        id 1HMSPS-0006cW-PV
        for sem at xxx.ru; Wed, 28 Feb 2007 20:16:10 +0300
Message-ID: <45E5B8B8.6090903 at XXX.org>
Date: Wed, 28 Feb 2007 20:15:36 +0300
From: Sergey Matveychuk <sem at XXX.org>
User-Agent: Thunderbird 1.5.0.9 (X11/20070124)
MIME-Version: 1.0
To: sem at xxx.ru
Subject: test
Content-Type: text/plain; charset=KOI8-R
Content-Transfer-Encoding: 8bit

The problem I got with both 2.3.8 and 2.2.13 versions.
I can't find any wrong (non-ASCII) character here. Any hint please?

--
Sem.