6.5 Setting global SMTP parameters

Using System Manager, you can define global SMTP configuration settings such as message size limits, recipient limits, and options to prohibit junk e-mail:

1. Start the System Manager from the Windows 2000 Start menu by selecting Programs Microsoft Exchange System Manager.

2. Expand the Global Settings section.

3. Right-click on Message Delivery, and select Properties.

4. Select the Defaults tab to specify incoming and outgoing message size and to restrict the number of recipients for each e-mail message (Figure 6.2).

   
   Figure 6.2: The Defaults tab

5. You can use the Outgoing message size configuration parameter to prevent users from sending large e-mail messages. Select either No limit or Maximum (KB) and enter a value for the maximum message size that can be sent. If a user attempts to send an e-mail message that is larger than the specified value, the message will be returned to the user as undeliverable.

6. The Incoming message size configuration parameter can be used in a similar manner to limit the size of messages being received.

   Select either No limit or Maximum (KB) and enter a value for the maximum message size that can be received. Incoming e-mail that exceeds the specified size will be returned to the sender as undeliverable. Setting limits for outgoing and incoming message size prevents large e-mail messages from affecting your network performance and can also save disk space.

7. You can use the Recipient limits option to restrict the number...