RES: [Mimedefang] block binaries attachments

Wed Sep 17 17:00:02 EDT 2003

Not without writing some code.

You probably want a full fledged virus scanner though, which can indeed
unzip files.

Wrolf Courtney
Donovan Data Systems, Inc.
(212) 633-5470

                      "Rodrigo Figueiredo Teixeira"                                                                                                  
                      <rteixeira at engetron.com.br>            To:      <mimedefang at lists.roaringpenguin.com>                                          
                      Sent by:                               cc:                                                                                     
                      mimedefang-admin at lists.roaring         Subject: RES: [Mimedefang] block binaries attachments                                   
                      penguin.com                                                                                                                    

                      09/17/2003 10:52 AM                                                                                                            
                      Please respond to mimedefang                                                                                                   

Do you know if there is a way to unzip compacted files to check for
prohibited attachments extensions?

Thanks,

Rodrigo.

-----Mensagem original-----
De: wrolf.courtney at donovandata.com [mailto:wrolf.courtney at donovandata.com]
Enviada em: quinta-feira, 11 de setembro de 2003 13:40
Para: mimedefang at lists.roaringpenguin.com
Assunto: Re: [Mimedefang] block binaries attachments

sub filter_bad_filename is in mimedefang-filter.example, at least in
MIMEDefang 2.36.

Wrolf Courtney
Donovan Data Systems, Inc.
(212) 633-5470

                      Fredrik Hansen

                      <fredrik.hansen at nykoping.nu>           To:
mimedefang at lists.roaringpenguin.com

                      Sent by:                               cc:

                      mimedefang-admin at lists.roaring         Subject: Re:
[Mimedefang] block binaries attachments
                      penguin.com

                      09/11/2003 11:42 AM

                      Please respond to mimedefang

On Thu, 11 Sep 2003, Rodrigo Figueiredo Teixeira wrote:

>
> I'm planning to install MIMEDefang in order to block all emails with
binaries attachments.
>
> I downloaded the necessary software and saw the installations
instructions, however I didn't find an explanation on how to block all
emails with binaries attachments.
>
> Does anyone can help me?
>
A good start would be to check for MZ in the first bytes of the file.
(Windows executables)
ie. 'head -c 2 <file>'
Maybe not a hightech solutions, but that's what i can come up with in 5
secs.
Best Regards,
Fredrik Hansen

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