filetype rules and pptx files

[Stephen Swaney]

Paul Lemmons wrote:
> -------- Original Message  --------
> Subject: filetype rules and pptx files
> From: Eli Wapniarski <eli at orbsky.homelinux.org>
> To: "mailscanner at lists.mailscanner.info" 
> <mailscanner at lists.mailscanner.info>
> Date: 05/05/2009 01:15 PM
>> On Tuesday 05 May 2009 20:44:49 Paul Lemmons wrote:
>>  
>>> Our CIO (of all people) is trying to send a PowerPoint 2007 document 
>>> and it is getting rejected. It turns out that the .pptx file is 
>>> really a zip archive and within that archive there is a file named 
>>> "0000.dat" which is getting identified as a DOS executable. When I 
>>> extract the file and run the file command against it I get the 
>>> following:
>>>     
>>
>> Why is your cio trying to send a pptx (powerpoint xml) file? Why not 
>> send it as a standard ppt file?
>>
>> Eli
>>
>>   
> And I quote (my CIO)...
>
> "...In order to send the file, I have to save it in 93-97 format and 
> resend. A real pain and unnecessary. Please fix so I can send pptx 
> attachments."
>
> So, there I am :/

Below are the filename rules we install as the default  to allow for 
safe Office 2007 filenames to pass through  MailScanner. We've had zero 
complaints since  we started using these rules.

DO NOT CUT "N PATE these rules into filename.rules.conf.  You'll need to 
replace some of spaces with tabs
for MailScanner to parse the rules.

Remember:

Syntax for filename.rules.conf rules is four fields:

    Field one: allow/deny/deny+delete,
    Field two: regular expression to match
    Field three: log text to use
    Field four: user report text.

!!!!!      NOTE: Fields are separated by TAB characters --- Important!!!!!

And below are the rules:

# ---- Start the Word 2007 File Type Extensions
# -------------------------------------------
# docx - Word 2007 XML Document
# docm - Word 2007 XML Macro-Enabled Document
# dotx - Word 2007 XML Template
# dotm - Word 2007 XML Macro-Enabled Template

# Excel 2007 File Type Extension
# -------------------------------------------
# xlsx - Excel 2007 XML Workbook
# xlsm - Excel 2007 XML Macro-Enabled Workbook
# xltx - Excel 2007 XML Template
# xltm - Excel 2007 XML Macro-Enabled Template
# xlsb - Excel 2007 binary workbook (BIFF12)
# xlam - Excel 2007 XML Macro-Enabled Add-In

# PowerPoint 2007 File Type Extension
# -------------------------------------------
# pptx - PowerPoint 2007 XML Presentation
# pptm - PowerPoint 2007 Macro-Enabled XML Presentation
# potx - PowerPoint 2007 XML Template
# potm - PowerPoint 2007 Macro-Enabled XML Template
# ppam - PowerPoint 2007 Macro-Enabled XML Add-In
# ppsx - PowerPoint 2007 XML Show
# ppsm - PowerPoint 2007 Macro-Enabled XML Show

# Word 2007 File Type Extensions
# -------------------------------------------
allow    \.docx$    Word 2007 XML Document    Word 2007 XML Document
deny     \.docmx$    Word 2007 XML Macro-Enabled Document    Word 2007 
XML Macro-Enabled Document
deny    \.dotx$    Word 2007 XML Template    Word 2007 XML Template
deny    \.dotm$    Word 2007 XML Macro-Enabled Template    Word 2007 XML 
Macro-Enabled Template

# Excel 2007 File Type Extension
# -------------------------------------------
allow    \.xlsx$    Excel 2007 XML Workbook    Excel 2007 XML Workbook
deny    \.xlsm$    Excel 2007 XML Macro-Enabled Workbook    Excel 2007 
XML Macro-Enabled Workbook
deny    \.xltx$    Excel 2007 XML Template    Excel 2007 XML Template
deny    \.xltm$    Excel 2007 XML Macro-Enabled Template    Excel 2007 
XML Macro-Enabled Template
deny    \.xlsb$    Excel 2007 binary workbook     Excel 2007 binary workbook
deny    \.xlam$    Excel 2007 XML Macro-Enabled Add-In    Excel 2007 XML 
Macro-Enabled Add-In

# PowerPoint 2007 File Type Extension
# -------------------------------------------
allow    \.pptx$    PowerPoint 2007 XML Presentation    PowerPoint 2007 
XML Presentation
deny    \.pptm$    PowerPoint 2007 Macro-Enabled XML Presentation    
PowerPoint 2007 Macro-Enabled XML Presentation
deny    \.potx$    PowerPoint 2007 XML Template    PowerPoint 2007 XML 
Template
deny    \.potm$    PowerPoint 2007 Macro-Enabled XML Template    
PowerPoint 2007 Macro-Enabled XML Template
deny    \.ppam$    PowerPoint 2007 Macro-Enabled XML Add-In    
PowerPoint 2007 Macro-Enabled XML Add-In
deny    \.ppsx$    PowerPoint 2007 XML Show    PowerPoint 2007 XML Show
deny    \.ppsm$    PowerPoint 2007 Macro-Enabled XML Show    PowerPoint 
2007 Macro-Enabled XML Show
# ------- End the Office 2007 rules

Best regards,

Steve

-- 
Steve Swaney
steve at fsl.com
www.fsl.com
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