How to restrict users for download larg file from OWA

Hi everybody
I want to restricts my user from downloading larg attached (larger than 3 or 5 MB) file via OWA in exchange 2007
how can I do this ?

- Regards
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luc_roySystem AdminCommented:
here is a link to some Screencasts that show you how to limit the size in outlook and owa.  maxRequestLength parameter is what you are looking for but look through these, you will learn a lot.
MapnaturbineAuthor Commented:
for view the screencasts Subscription required.
also I know methods of doing limitation for send and receive mail , I want to know
a solution only for put restrinction in OWA download and upload (specially for download)

reason :
some of my users save an email with the larg attachement in the draft folder when thay are in my company (for example by MS outlook)
and when thay are out of office they can download that file from his/her draft folder and this is a hole !

luc_roySystem AdminCommented:
you are trying to block them from sending large files to themselves?
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MapnaturbineAuthor Commented:
excuseme for my delay
answer is Yes .
Jian An LimSolutions ArchitectCommented:
Controlling attachment size in Exchange Server 2007 Outlook Web Access (OWA)

by doing this, you are controlling your web server to talk only certain MB.

in your case, you probably want to drop it to let's say 5mb
that will piss off alot of people :P

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MapnaturbineAuthor Commented:
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