Hi, I have one email server, and 1 LDAP server for authentication. In my case all users should go to LDAP for authentication. For decreasing load on one LDAP server I want to share load on 2 LDAP servers instead of 1. For this I am planning to put one Load Balancer for 2 LDAP servers. So for authentication qmail will send request to Load Balanced IP and then LB will decide where to send the request.

For this instead of buying LB I want to put Linux box and setup Load Balancer on that. Is it possible? If yes then how can I do that ?