filetype rule false positive

Julian Field MailScanner at
Tue Feb 22 17:14:58 GMT 2005

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Hirsh, Joshua wrote:

>>I tried sending myself an email with the same text and it was again
>>stopped.  I then tried it, but removed the LZ characters at the
>>beginning of the body and it came through without any issues.  I'm not
>>sure how the filetype rules are matched, so I don't even know if this
>>makes sense or if there is a way to prevent it.
>Hi Jared,
> This isn't really a MailScanner issue. This is a problem with the "file"
>command and how it attempts to detect the mime content of messages. I've run
>into similar problems with certain text being picked up as AVI's. If it
>happens quite frequently, your best bet is to disable the file content
Fortunately the users can easily work around it, just by adding a space
or a blank line at the start of their message.

Julian Field
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