System information

Chapter 8 Customizing Services 117
Mail service also works with other popular mail applications that use standard email
protocols. Users can get mail using the IMAP or POP protocol and send it using the
SMTP protocol.
Specifying a Mail Relay Server
Your mail service can relay outgoing mail through another server, and that relay server
will forward the mail to its destination.
 If you use a commercial Internet service provider (ISP), it may stipulate that all
outgoing email be relayed through a designated server.
 If your organization provides your Internet service, your server may need to use a
relay server to deliver outgoing mail through a firewall. In this case, your organization
will designate a particular server for relaying mail through the firewall.
Important: Use a relay server only if your ISP or organization requires one. Relaying
mail through another server without permission may make your server appear to be a
mail service abuser.
To relay outgoing mail through another server:
1 In the Mail pane of Server Preferences, select “Relay outgoing mail through ISP.”
If this option is already selected, click the Edit button next to it.
A dialog appears for entering the relay server connection details.
2 Enter the relay server’s DNS name or IP address supplied by your ISP or organization.
3 If your ISP or organization also requires your server to authenticate before sending
mail, select “Enable SMTP relay authentication” and enter the user name and password
from your ISP or organization.