Topic Last Modified: 2007-01-24

The following two message size limit settings exist:


To set message size limits

  1. In Microsoft Management Console, select the SMTP virtual server, and then click Properties on the Action menu.

  2. On the Messages tab, select Limit message size to (KB), and then type a value (in kilobytes) for the maximum size of a message. The default is 2,048 KB. The minimum value is 1 KB.

  3. On the Messages tab, select Limit session size to (KB), and then type a value to indicate the maximum total size (in kilobytes) of all messages in a specific connection. This number will always be larger than the maximum message size and should be set carefully because the connecting message transfer agent (MTA) is likely to resubmit the message repeatedly. The default size is 10,240 KB. This value should be greater than or equal to the value entered for Limit message size to (KB).