For the past 3-1/2 years I have not been able to solve this issue....
All of my Mac Users have either Entourage or Mac Office 2011
can not send emails larger than 10mb. Error message is size exceed limits. I have set up the hub transport for 30720 kb and I also went into the web.config located in the ews and owa folders and changed the http max request length to 30720 and from the command line updated from the command line the -requestLimits.maxAllowedContentLength:[size in bytes] to 31457280
What elas must I do to make this work. I have alot of unhappy Macbook campers here.