在freebsd企业邮件系统下，一个bat文件，用rar压缩，然用用7-zip再压缩一次后仅仅3kb，用foxmail发送正常，用MS outlook 2003发送后MailScanner提示以下错误信息:
Making attempt 2 at processing message
Making attempt # at processing message
MailScanner[79814]: Warning: skipping message 355961D4A02A.AD9B5 as it has been attempted too many times
MailScanner[79814]: Quarantined message 355961D4A02A.AD9B5 as it caused MailScanner to crash several times
MailScanner[79814]: Saved entire message to /var/spool/MailScanner/quarantine/20110913/355961D4A02A.AD9B5
寄件者还会收到以下退信：
Our virus detector failed to completely analyse a message you sent:-
To: info@www.itkylin.com
Subject: mail test for www.itkylin.com
Date: Tue Sep 13 20:09:18 2011
Any parts of the message that could not be analysed will not have been delivered.
If you are using Microsoft Outlook, we strongly recommend you change your outgoing message format from “Rich Text” to “HTML” or “Plain Text”.
1) Click on the “Tools” menu and choose “Options…”
2) Go to the “Mail Format” tab
3) For message format, select “HTML” or “Plain text”
4) Click OK
The virus detector said this about the message:
Report: Report: MailScanner: Message attempted to kill MailScanner
开始以为是outlook的邮件格式的原因，可以分别出修改了用”HTML” or “Plain text” or “Rich Text”测试都不行。怀疑是MailScanner的相关配置问题，于是检查MailScanner.conf配置文件，注释掉以下两条规则：
[[email protected] ~]# vi /usr/local/etc/MailScanner/MailScanner.conf
#Archives: Filename Rules = %etc-dir%/archives.filename.rules.conf
#Archives: Filetype Rules = %etc-dir%/archives.filetype.rules.conf
然后重新启MailScanner:
[root@www.itkylin.com ~]# /usr/local/etc/rc.d/mailscanner restart
再发邮件测试一下，OK了，maillog没有错误信息了，也没有退信提示了！