Exchange 2003 Multiple Smart Hosts

Date September 28, 2009 Author By kadmin Category Microsoft Exchange

You probably already know how to set your Exchange 2003 server to forward all outgoing mail to a Smart Host (another smtp server).  But what if that server is down – you would want a secondary server to use as a backup. 

If you want a secondary SmartHost for the same connector, the format is:

[xxx.xxx.xxx.xxx],[yyy.yyy.yyy.yyy]

In other words, simply list both Smart Hosts in the box, surrounded with square brackets and separated with a comma (no spaces).

More information: http://support.microsoft.com/kb/265293