Change Outlook 2011 max attachment size

Change Outlook 2011 max attachment size

Increase the “maxRequestLength” to 51200000 in web.config (found in ‘ClientAccess\exchweb\ews’ & ‘ClientAccess\owa’).
Increase the “maxReceivedMessageSize” 51200000 to  in web.config  (found in ‘ClientAccess\exchweb\ews’).

Open command prompt & run the following:

Requirements Exchange 2010 SP3 (Will not work with  eg. SP1)

 

source: http://social.technet.microsoft.com/Forums/exchange/en-US/958ba423-a069-4d29-afef-ebe5f986605a/entourage-2008-ews-attachment-limit-on-exchange-2010?forum=exchange2010