HAProxy provides the following template to help you configure MS Exchange 2010 MAPI (Message Application Programming Interface) / RPC (Remote Procedure Call) services.

You may have to modify these parameters to suit your environment:

peer directive statements

HAProxy server names and associated administrative IP


The listening IP (usually an IP address configured over VRRP)


The server name and IP addresses


You can use the defaults XCHANGE2010_TCP, peers and backend sourceaddr sections for other Exchange 2010 TCP based services. There is no need to duplicate them.

peers hapeelb
peer hapee1
peer hapee2
# Persistence table
backend sourceaddr
stick-table size 10k type ip peers hapeelb
defaults XCHANGE2010_TCP
mode tcp
log global
option tcplog
balance leastconn
option dontlognull
option redispatch
option contstats
option socket-stats
timeout server 600s
timeout client 600s
timeout connect 5s
timeout queue 60s
retries 3
default-server inter 15s rise 2 fall 2
backlog 10000
frontend ft_xchange2010_rpctcp
bind name epm tcp-ut 30s
bind name mapi tcp-ut 30s
bind name addressbook tcp-ut 30s
default_backend bk_xchange2010_rpctcp
backend bk_xchange2010_rpctcp
balance leastconn
stick on src table sourceaddr
option tcp-check
tcp-check connect port 135
tcp-check connect port 60000
tcp-check connect port 60001
default-server on-marked-down shutdown-sessions
server CAS1 check
server CAS2 check