You can set up your mail server to relay outgoing mail through a specific server. If mail relay is off, mail is delivered to the SMTP mail servers specified in a message's recipient fields ("to," "cc," and "bcc").

To relay all mail from one mail server to another:

1	Open Mac OS Server Admin and log on to the server you want to administer.
2	Press the Mail Services button and choose Mail Server Settings.
3	Click the Mail Out tab.
4	Click the "Allow outgoing mail" button.
5	Select the "Relay all SMTP mail via" checkbox.
6	Type the DNS name of the SMTP mail server on your network that will relay outgoing mail.
	For more information on the options you can set, see Mail Out settings.

To relay mail addressed to a specific host:

1	Open Mac OS Server Admin and log on to the server you want to administer.
2	Press the Mail Services button and choose Show Host List.
	This list shows the hosts (mail servers) that have sent mail to or received mail from your mail server.
3	Double-click the host whose mail you want to relay.
4	Click the Mail To tab.
5	Make sure the "Allow mail to host" button is selected.
6	Select the "Relay all SMTP mail via" checkbox. Then type the DNS name of the SMTP mail server on your network that will relay outgoing mail.
	For more information on the options you can set, see Mail To settings.

Related topic

Managing mail services