Supporting Messaging Clients

Configure Outgoing Connections

Use the Delivery tab to configure outgoing connections used by your virtual server to deliver messages. These settings can help you monitor system resources by limiting inactive connections and connections to remote domains.

To configure outgoing connections:

  1. Start System Manager
    On the Start menu, point to Programs, point to Microsoft Exchange, and then click System Manager.
  2. Navigate to the SMTP virtual server.
    1. Servers
    2. Server
    3. Protocols
    4. SMTP
    5. SMTP virtual servers
    6. SMTP virtual server
  3. Right-click the SMTP virtual server, and then click Properties.
  4. On the Delivery tab, click Outbound connections. In Outbound Connections, set the following options:
Option Description
Limit connections to Specifies the total number of simultaneous outbound connections to all remote domains that can exist at one time. The default is 1,000 connections. The minimum is 1 connection. This setting can be used to improve system performance in conjunction with Limit number of messages per connection to, on the Messages tab. If the check box is not selected, no limit is imposed.
Time-out (minutes) Specifies the time allowed before an inactive connection is closed. The default is 10 minutes.
Limit connections per domain to Limits connections to any single remote domain. The default is 100 connections. This number should be less than or equal to the value for the Limit connections to option. If the check box is not selected, no limit is imposed.
TCP port Designates the TCP port used for outgoing transmissions. The default is port 25. The outgoing port setting can be the same as the port setting for incoming transmissions.