Google Outbound Services Configuration Guide - Manual (Page 95)

Microsoft Exchange 5.5 101
3. Right-click and select Properties and then click the Connections tab.
4. Enter the appropriate domain name in the field labeled “Forward all messages
to host”.
The hostname to use is:
outbounds[your system number].obsmtp.com
where [your system number] is your system number. To find what system to
use, see “Identify Your System” on page 13.
5. Under the “Retry Interval (hrs.)” setting, type in the following:
.1,.2,.3,.4
6. Click OK.
7. Stop and Restart the MS Exchange 5.5 service for the changes to take effect.
Test Outbound Mail
Once you have set up your smarthost, test that your configuration is correct and
mail is flowing normally.
Test the configuration.
1. Go to the Queues tab in Internet Mail Service Properties. Items with a retry
state could indicate outbound mail delays.
2. Send a message from a mail client inside your network to an outside address.
You should see a line in the header email which indicates being received and
delivered by
exprodNobM.obsmtp.com , where N and M are numbers.
3. Test inbound mail to confirm normal functionality. Send a message from an
outside email address to an address on your service.
4. In the Administration Console, select your email config organization and click
the Outbound Servers tab. After a minute of successful mail flow, traffic
should display on the graph.
5. Confirm that your mail server is not an open relay. An open relay will make
your mail server vulnerable to hijacking from spammers and will most likely
cause an interruption in service.
Use an external open relay test, such as http://www.mxtoolbox.com/
diagnostic.aspx or http://www.spamhelp.org/shopenrelay/ . If the result
shows that you have an open relay, correct your private relay settings. If you
see an uncertain response (such as “maybe” or “warning”) then check that
your private relay settings are correct.
See “Set Up Reinjection” on page 100 for the correct private relay settings.