Three seperate times recently I've had people outside the company tell me that our Exchange Server has rejected their mail that contained a large attachment. Our server is running Exchange 2003 and I've checked the System Manager under global settings and verified that the message delivery properties have no limit on inbound or outbound message size. Is there anywhere else that a maximum message size could be getting set? Trying to figure this out is making me crazy.

Verify all settings in this article http://support.microsoft.com/kb/322679 Deli