MailScanner总是过滤掉带BMP图片的邮件，请帮忙

achocho

我的邮件系统是RHEL4.2+Sendmail+Dovecot+MailScanner，其他一切正常，就是总是会过滤掉带BMP图片的邮件，系统提示邮件如下：

The following e-mails were found to have: Bad Filename Detected

Sender: marketing@ntkltd.com
IP Address: 192.168.3.221
Recipient: anita@ntkltd.com.tw, cathy@mail.ntkltd.com, eric3_chen@asus.com.tw, julia@ntkltd.com.tw, june_ding@asustek.com.cn, lucy_dong@asustek.com.cn, rhodes_chang@asus.com.tw
   Subject: re: 13G070408010DE 承認書有誤&檢驗報告
MessageID: k7V281hl031618
Quarantine: /var/spool/MailScanner/quarantine/20060831/k7V281hl031618
    Report: MailScanner: Possible buffer overflow in Windows (Outlook.bmp)
    Report: MailScanner: Possible buffer overflow in Windows (Outlook%281%29.bmp)

Full headers are:

Return-Path: <乬>
Received: from server ([192.168.3.221])
        (authenticated bits=0)
        by mail.ntkltd.com (8.13.1/8.13.1) with ESMTP id k7V281hl031618;
        Thu, 31 Aug 2006 10:08:02 +0800
Message-Id: <200608310208.k7V281hl031618@mail.ntkltd.com>
Date: Thu, 31 Aug 2006 10:11:06 +0800
From: "marketing" <marketing@ntkltd.com>
To: "Rhodes_Chang" <Rhodes_Chang@asus.com.tw>,
         "Eric3_Chen" <Eric3_Chen@asus.com.tw>, "Julia" <Julia@ntkltd.com.tw>,
         "Anita" <Anita@ntkltd.com.tw>, "June_Ding" <June_Ding@asustek.com.cn>,
         "cathy" <cathy@mail.ntkltd.com>,
         "Lucy_Dong" <Lucy_Dong@asustek.com.cn>
Subject: =?gb2312?B?cmU6IDEzRzA3MDQwODAxMERFILPQ1UqV+NPQ1WAmmXrynojzuOY=?=
X-mailer: Foxmail 5.0 [cn]
Disposition-Notification-To: "marketing" <marketing@ntkltd.com>
Mime-Version: 1.0
Content-Type: multipart/mixed;
        boundary="=====001_Dragon831270367712_====="


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请问如何解决，非常感谢！