Exchange 2010 message limits

I have an issue with message size limits in Exchange 2010 as follows:

When I send a message with an attachment size greater than 10MB I get the following bounce message:

"This Message was undeliverable due to the following reason. Your message is larger than the destination computer is willing to accept, so it was returned. Size of this message 22385880 bytes. Server maximum size 10485760 bytes."

I have set the limits on the server using exchange shell as follows:

1. Organizational limits - I have modified the organizational message size limits using theSet-TransportConfig cmdlet from the Exchange shell as follows: Set-TransportConfig -MaxReceiveSize 40MB -MaxSendSize 40MB

2. Receive Connector limit - Set-ReceiveConnector “CONNECTOR NAME” -MaxMessageSize 40Mb

3. Recipient limit - Set-Mailbox “Joe Adams” -MaxSendSize 40Mb -MaxReceiveSize 40Mb

Is there another place I am forgetting about where the server is limited to the maximum size of 10485760 bytes? 

Any help would be greatly appreciated?