How to allow 35 MB/unlimited attachment from single /multiple user mailbox

Hi,

I have allow 35 MB attachment from user mailbox option, organization setting and send / received connector.

But when I have send a mail for outside domain with more than 10 MB attachments , it got fail…

Kindly suggest how I can enable 35 MB attachments from exchange 2013.

Product details : Exchange 2013 SP1.

Gateway : Trend micro scan mail.

Thanks ,

Dilip

Sr. Sys admin