Overview

This article describes the process to increase the Message Size Limit for Microsoft Exchange.

Process

For Microsoft Exchange 2007 and later:

1. Open the Exchange Management Shell on the Microsoft Exchange server.
2. Run the following Windows PowerShell command to increase the size to 50 MB:

 Set-ReceieveConnector –identity “Default [servername]” –maxmessagesize 50MB 

For Example: 

Set-ReceieveConnector –identity “Default myserver” –maxmessagesize 50MB 

For Microsoft Exchange 2003:

1. Open Exchange System Manager.
2. Expand Global Settings.
3. Right-click Message Delivery > Properties.
4. Select the Default tab.
5. Change to the desired size limit.
6. Select Apply and OK.

Change the Receiving Message Size to 51200 (50MB)

NOTE: The GFI MAX MailProtection default message size is 50MB and cannot be changed.