I am having Single Exchange Server in my organization and i am planning to install second Exchange Server 2003 in same organization and same Routing Group. So Can Anybody tell me how to configure mail flow between two exchange server so user on one mail server can send mail 2 user on second mail server.

Hi, There's nothting that need to be configured to get mailflow betweeen two servers in the same Routing Groups to work. Just make sure that you have "Integrated Windows Authentication" configured on the "Default SMTP Virtual Server" (=default setting)Martina Miskovic