Troubleshooting – Google Outbound Services Configuration Guide User Manual
Page 27
Microsoft Exchange 2003 (Private DNS Method)
29
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 24 for the correct private relay settings.
Troubleshooting
Because Microsoft Exchange is a third party product, this document cannot
include complete troubleshooting steps. For further troubleshooting information,
see the Microsoft site for External DNS instructions:
You can also find more information in the Microsoft Exchange Server 2003
Transport and Routing Guide:
How can I be sure my firewall allows a connection to Private Outbound DNS?
Your sending mail server needs to be able to reach the message security service
using DNS on UDP port 53.
If you are not sure your network settings allow your mail server to connect to an
external DNS host on UDP port 53, run the following test on your mail server:
1.
In a DOS command prompt, type
nslookup
.
2.
Note your current default server.
3.
In the nslookup prompt, type set q=mx and hit return.
4.
In the nslookup prompt, type
gmail.com
and hit return to get the gmail.com IP
address.
5.
In the nslookup prompt, type
server [IP address]
and hit return. For
instance, if you are on system 8, type
server 64.18.7.12
and hit return. If
you are using a different system number, use the appropriate IP address for
that system.