Exchange 2016 Mobile Email Block download attachment

Need advise on whether exchange 2016 has this kind of feature whereby we can control mobile from download big attachment?

Yes. There is control by modifying the web.config file.

https://www.stephenwagner.com/2019/08/09/cannot-download-attachment-due-to-size-with-mobile-device-on-exchange-activesync/

The challenge comes in modifying the web.config file in that when you install a new CU, then all your customization might be gone.
On the phone you can set it to download headers only etc.

Hi,

I followed the guideline, found that the default for  maxRequestLength is "10240" and MaxDocumentDataSize is "10240000"

Does this mean by default my exchange activesync should not be receiving attachment that are large than 10MB?

Yes. It is the default setting.

Hi all,

I tested sending attachment with 12MB from my account to one of my internal user, he is able to receive the attachment via mobile.

any idea?

thanks.

For the internal user, the only restriction is user and organisation limit.

https://docs.microsoft.com/en-us/exchange/message-size-limits-exchange-2013-help

Read the above document and you will know different limits in details.

Hi all, i followed the guideline https://www.stephenwagner.com/2019/08/09/cannot-download-attachment-due-to-size-with-mobile-device-on-exchange-activesync/

Changed the web.config value in C:\Program Files\Microsoft\Exchange Server\V15\ClientAccess\Sync\web.config

add key="MaxDocumentDataSize" value="1024000"
httpRuntime maxRequestLength="1024" fcnMode="Disabled"


but when i send email from outlook 2010 with attachment of 2MB, in my mobile i'm still able to view and see the document.

any idea?