RE: Attachment handling in OWA 2003

  • From: Rick Boza <rickb@xxxxxxxxxxx>
  • To: Exchange List <exchangelist@xxxxxxxxxxxxx>
  • Date: Wed, 19 Jan 2005 16:24:08 -0500

Some of the keener AV programs (Sybari and Trend Micro come to mind) will
open up the email attachments and look at the blob for file type and other
content rather than relying on the extension on the file.


On 1/19/05 3:14 PM, "Raji Arulambalam" <RajiA@xxxxxxxxxxxxxx> wrote:

> http://www.MSExchange.org/
> 
> Hi
> 
> Many thanks.  I have looked at all this. But my question was how would you
> block an attachment that a user has renamed the file type extension.?
> If I rename a file say btgupg.exe as btgupg.txt and attach it from a OWA
> client, that gets delivered to Exchange.
> Does it also use the mime types to check and block.?
> 
> RajiA
> 
> 
> 
> 
>>> -----Original Message-----
>>> From: Deshwal, Chand [mailto:CDD@xxxxxxxxxxxxx]
>>> Sent: Wednesday, January 19, 2005 6:43 PM
>>> To: [ExchangeList]
>>> Subject: [exchangelist] RE: Attachment handling in OWA 2003
>>> 
>>> 
>>> http://www.MSExchange.org/
>>> 
>>> Look at these links.
>>> 
>>> 
>>> http://www.msexchange.org/tutorials/OWA-2003-End-User-Tips.html
>>> http://support.microsoft.com/default.aspx?scid=kb;EN-US;q262631
>>> 
>>> 
>>>  
>>> Chand
>>> 
>>> -----Original Message-----
>>> From: Raji Arulambalam [mailto:RajiA@xxxxxxxxxxxxxx]
>>> Sent: Wednesday, January 19, 2005 10:23 AM
>>> To: [ExchangeList]
>>> Subject: [exchangelist] Attachment handling in OWA 2003
>>> 
>>> http://www.MSExchange.org/
>>> 
>>> Hi
>>> Using Exchange 2003 SP1.
>>> How can I restrict the handling of attachments in OWA.
>>> Currently I have
>>> disabled attachments as it only checks by file type extensions, and a
>>> user can change the file type name.
>>> I want to allow only certain attachment types  like word doc or text.
>>> 
>>> Can I use mime types to allow these types ?
>>> Where can I get a list of the various mime types ?
>>> 
>>> Also is there any place that a full description and
>>> difference between
>>> the two levels of file types.
>>> 
>>> Cheers
>>> 
>>> RajiA
>>> Email disclaimer: This email and any attachments are confidential. If
>>> you are not the intended recipient, do not copy, disclose or use the
>>> contents in any way. If you receive this message in error,
>>> please let us
>>> know by return email and then destroy the message. Environment Bay of
>>> Plenty is not responsible for any changes made to this message and/or
>>> any attachments after sending.
>>> ******************************************************
>>> This e-mail has been checked for viruses and no viruses were
>>> detected.
>>> 
> Email disclaimer: This email and any attachments are confidential. If you are
> not the intended recipient, do not copy, disclose or use the contents in any
> way. If you receive this message in error, please let us know by return email
> and then destroy the message. Environment Bay of Plenty is not responsible for
> any changes made to this message and/or any attachments after sending.
> ******************************************************
> This e-mail has been checked for viruses and no viruses were detected.
> 
> ------------------------------------------------------
> List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist
> Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp
> Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ
> ------------------------------------------------------
> Other Internet Software Marketing Sites:
> World of Windows Networking: http://www.windowsnetworking.com
> Leading Network Software Directory: http://www.serverfiles.com
> No.1 ISA Server Resource Site: http://www.isaserver.org
> Windows Security Resource Site: http://www.windowsecurity.com/
> Network Security Library: http://www.secinf.net/
> Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com
> ------------------------------------------------------
> You are currently subscribed to this MSEXchange.org Discussion List as:
> rickb@xxxxxxxxxxx
> To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist
> Report abuse to listadmin@xxxxxxxxxxxxxx



Other related posts: