Hello, I would like to enforce some kind of rule which states that "inter-office" email must have a message size limit. While allowing domain users to be able to email out large documents. For example: UserA@myDomain.ca can only email 5M (max) emails to UserB@myDomain.com UserA and UserB can email 10MB (max) emails to billGates@microsoft.com Exchange 2003 SP2 on Windows 2003 Std SP2 My thought was to create an SMTP connector for the local domain, assign it a message size limit. But I now believe internal emails do not use a connector (which makes sense now). Then I thought I could create a virtual smtp server, but that would require a 2nd IP address or port which I did not know how to configure. Any thoughts, tips or links?Drew

The Global Send and recieve limits are the guiding factor. In order to allow large messages sent to the Internet, You'll have to raise the global send and recieve limits and yourSMTP connector to the highest size limit you want to allow ( accounting for SMTP "padding", for a 10MB limit, raise the Global and SMTP connector limits to 15MB). To ensure internal users can only send 5MB, you will have to manually set each user to 5MB. More info: http://support.microsoft.com/kb/322679 How to set size limits for messages in Exchange Server

I'll give it a shot, but am thinking it is not going to work. If UserA has a send limit of 5MB, isn't that a limit of all outgoing messages regardless of what send method/connector they're using? My goal is to encourage (well, enforce rather) not attaching files to each other in the company (use file shares instead). For example: UserA cannot send large attachments to co-worker UserB. But UserA can send large emails to external contacts.Drew

The per user mailbox setting should overwrite the global setting, yes. but the SMTP connector setting should use the Global Settings. I may be wrong, but test and see :) - I'm curious if that will work.