Question : MAC Mail with Exchange 2007 Attachment Issue

I have a Microsoft Exchange 2007 server running on an SBS 08. Most of the PC's are MAC's. I have changed the default attachment size limit to 20MB. From inside the building and from OWA, this limit works fine.

The scenario and problem:
1. Users outside the bldg.
2. Using Mac Mail
3. Connecting to Exchange using Exchange client not POP or IMAP.

(NOTE: I forgot to mention before but the file size limit was set at 10MB, and I raised it up to 20MB. The change has worked fine internally.)

When a user tries to send a message with an attachment larger than 10MB or so, the message fails.  Without an attachment it works fine. I have tested 2.6MB files and they also work fine.

I do get and error, but nothing that helps much:
Cannot send message using the server [company.com] (Exchange)
The Exchange 2007 connection to server "DNS.domain.com" failed.


Does anyone have any ideas? I am plum out!!

Answer : MAC Mail with Exchange 2007 Attachment Issue

Hi Luuker
You need configure the message size for Exchange Web Sync (EWS)

Go to Exchange install directory
C:\Program Files\Microsoft\Exchange Server\ClientAccess\exchweb\ews

Open in notepad / text editor
web.config

Search for
 maxrequestlength
Change the value to the size you want (in KB) and then save

Start > Run > CMD

cd \Windows\System32\inetsrv

appcmd set config "Default Web Site/ews" -section:requestFiltering -requestLimits.maxAllowedContentLength:[size in Bytes!]

appcmd set config "Default Web Site/owa" -section:requestFiltering -requestLimits.maxAllowedContentLength:[size in Bytes!]

iisreset

More info here
http://ministry-it.blogspot.com/2009/08/entourage-ews-attachment-limits.html
http://edmckinzie.spaces.live.com/Blog/cns!687C72A5909E4230!561.entry

I dont have a MAC, so I cant test it from my end. Let me know if this works.

Thanks
Sunny