exchange 2010 message size limits

We're experiencing a problem related to Message Size limits which I'm trying to understand.

We have a Global Transport limit of 75MB, and we have Exchange 2010 Receive and Send connectors with the Default 10MB limits specified.

I'm able to SEND/RECEIVE messages larger than 10MB (have sent a message with 4 10MB attachments for a total size of 40MB+) and the message is SENT PROPERLY.

It appears the Message Size Limits on the SEND/RECEIVE connectors are not relevent at all?

Does the Global Transport Setting limit take precedent? (I've seen a number of links that seem to imply the "smallest" takes precedent, but that does NOT seem to be true in our situation)?

Any insight?

THANKS

Additional Info (Maybe): Can anyone clarify what the SizeEnabled setting of EnabledWithoutValue means on a RECEIVE Connector? Almost implies that the size in the Recieve connector is NOT respected? (which would then imply the Global Setting would take precedent)? Can anyone clarify?

THANKS