Overt have a new backup Exchange 2003 service. We can provide full backups of Exchange 2003 and after a full backup we provide incremental backups to reduce bandwidth and increase speed of the exchange backups.
Take a look at some of the features of Overt Software’s new backup service
Exchange, SQL, vmware & Hyper-V plugins
Full support for SQL/Exchange backups, vmware & hyper-v plugins let you backup your virtual enviroment. Exchange 2000 / 2003 / 2007 and exchange 2010. The SQL module supports 2005/2008 and even 2012!