Exchange 2003 Out of Office Not working
I have spent the last hour trying to work out why out of office would not work… Then I discovered that on Exchange 2003 it is turned of at the server for external addresses by default!
To enable it, goto Exchange system manager>Global Settings> Internet Message Format>Default> Properties>Advanced And tick “allow out of office responses”. Then restart the SMTP server, and all should work!!
References: http://support.microsoft.com/kb/821899