Hi, If I have two front servers in the Exchange 2003, what will happen when the user is using the OWA or other services? Thanks.

It's not going to harm anything or not going to affect the services. You will have to configure the FE server for the client request. http://technet.microsoft.com/en-us/library/bb124853(EXCHG.65).aspx http://technet.microsoft.com/en-us/library/aa995729(EXCHG.65).aspx You can Load Balance them http://www.petri.co.il/load_balancing_exchange_front_end_servers.htm# Cheers, Gulab | MCITP: Exchange 2010 | MCITP: Exchange 2007 | Skype: Gulab.Mallah | Blog: www.ExchangeRanger.blogspot.com