Apple Mac OS X Server (version 10.2.3 or later) - Manual (Page 413)

Mail Service 413
m The incoming and outgoing SMTP response names are typically the same.
m The incoming and outgoing response names should match the DNS name that another
server would get by doing a reverse DNS lookup of your server’s IP address.
m If your server connects to the Internet via an Internet gateway or router that uses
Network Address Translation (NAT), your server effectively has the IP address of the
Internet gateway or router. In this case, the incoming and outgoing response names
should match the DNS name that another server would get by doing a reverse DNS
lookup of the Internet gateway’s IP address. An AirPort Base Station is an example of an
Internet gateway that can be configured to use NAT.
To specify the SMTP response names:
1 In Server Settings, click the Internet tab.
2 Click Mail Service and choose Configure Mail Service.
3 Click the Protocols tab and choose Apple Mail Service SMTP from the pop-up menu.
4 Click SMTP Options.
5 Enter the incoming response name and the outgoing response name, then click Save.
Changing the Incoming SMTP Port Number
You can change the port number on which your SMTP service receives incoming mail from
other servers. Other servers must use this port number to deliver incoming mail to your
server. The standard incoming SMTP port is 25. You can change this port number, but do so
carefully. If you change to a nonstandard incoming SMTP port number, other servers will be
unable to deliver incoming mail to your server unless they use this nonstandard port number
for their outgoing SMTP mail. Make sure you don’t change to a port number already in use by
other services or operations.
To change the incoming SMTP port number:
1 In Server Settings, click the Internet tab.
2 Click Mail Service and choose Configure Mail Service.
3 Click the Protocols tab and select Enable SMTP, if it is not already checked.
4 Change the port number for the SMTP protocol and click Save.
LL0395.Book Page 413 Wednesday, November 20, 2002 11:44 AM