Google Outbound Services Configuration Guide - Manual (Page 57)

Microsoft Exchange 2000/2003 Multi-Server (Smarthost method) 61
4. In the lower right corner of the Delivery tab, click Advanced.
5. Type in the appropriate smarthost hostname listed below in the field labeled
“Smart host”.
The appropriate smarthost 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.
Note: If an alternate IP address was used, configuration changes to the
other machines may be necessary if they are using the bridgehead as a smart
host. If not, changes may not be necessary.
Option Two: Configure a Connector
With this option, a connector sends mail directly to the email security service. To
avoid delays, the retry interval is decreased so if a failure occurs your mail server
will recover quickly.
This will not completely eliminate delays, but will reduce the duration of delays.
Change the Retry Interval
On each SMTP Virtual Server in the environment which is designated as a
bridgehead:
1. Right-click the SMTP Virtual Server and select Properties.
2. Click the Delivery tab.
3. Under Outbound, change the default values to the following:
First retry interval (minutes): 1
Second retry interval (minutes): 1
Third retry interval (minutes): 3
Subsequent retry interval (minutes): 5
Configure the smarthost to route traffic to Outbound Services
1. Click Connectors and then right-click the SMTP Connector (or the Internet
Mail SMTP Connector) and select Properties.
2. On the General tab, type in the appropriate hostname in the field labeled
“Forward all mail through this connector to the following smart hosts”.
Forward outbound mail to
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.