Re: rejecting messages with attachments with postfix

Joshua Schmidlkofer <[email protected]>
Newsgroups gmane.org.user-groups.linux.pdxlug
Message-ID <[email protected]>
/^(Content-(Type|Disposition):.*).*(file)?name="?.*\.(adp|ade|bas|bat|chm|com|cpl|cmd|crt|dll|enc|eml|exe|hlp|hta|inf|ins|isp|js|jse|lnk|mdb|mde|msc|msi|msp|mst|pcd|pif|reg|scr|sct|shs|url|vb|vbe|vbs|wsc|wsf|wsh|zip)"?/ 
REJECT Sorry, this organization is no longer accepting the type of 
attachments that commonly carry viruses. Please contact email recipient 
by phone for a mutually agreeable method of emailing attachments. Thank you!


That is the Regex that I use.  -  To add extentions is trivial, and it 
covers the microsoft trash.  Also, it lets the other end know [in 
theory] about that I am doing.

I put that in files ref'd by 'mime_header_checks' and 'body_checks'

js

Carla Schroder wrote:
> On Saturday 24 July 2004 12:56 am, Robby Russell wrote:
> 
>>On Sat, 2004-07-24 at 00:55, Carla Schroder wrote:
>>
>>>Ok gurus, can you find any flaws with using this regex to reject all 
> 
> messages 
> 
>>>with attachments in Postfix?
>>>
>>>/filename=\"/   REJECT take your sorry attachments elsewhere, luser
>>>
>>>Put this in a file and call it mime_header_checks
>>>Call it from main.cf with 
>>>
>>>mime_header_checks = regexp:/etc/postfix/mime_header_checks 
>>>
>>>It seems too easy to be true, or perhaps it's just too Draconian. Whatcha 
>>>think?
>>
>>Do you really want to send back such a nasty message each time someone
>>has a vcard attachment? :-p
>>
> 
> 
> Nah, they should get a custom message:
> 
> REJECT only lusers use vcards
> 
> And then we can start a debate over GPG sigs: inline or attached?
> 
> With luck, we'll avoid doing any real work at all for days and days and days.
>

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