We have configured exchange 2010 server with CAS,hub transport and mailbox roles.this server is placed in our intenal network.ip is 192.168.7.2
We also have configured exchnage 2010 server with edge transport server role.this server is placed in DMZ.ip is 220.127.116.11
All the users in our internal network are configured with outlook express client with outgoing mail server ip as 192.168.7.2.
Now when we send the emails to any internet email address say email@example.com we check the headers it shows us the ip address of our CAS server i.e192.168.7.2.
But actually it should show the ip address of edge server?
how do we rectify this problem?