I just want a bit of advice on adding in an Edge Transport Server to a production Exchange 2010 environment.
We have two servers both running the HT and CAS roles with a Windows NLB connection between them. All our mail currently routes out through a SmartHost linux server in a different domain in our forest. Here's my questions for clarification:
1) Do I have to apply the edge.xml file onto both my HT servers to configure them both, or will applying it on one make the changes to the environment and be "done"?
2) I assume I then will just need to re-point my MX record for our domain from the IP address of HT connection to the IP address of the Edge server? Can/should I leave the MX record that points to the HT in place with a higher value on it to guarantee mail will route continuously through the changeover?
3) Anything else obvious I'm overlooking? I've looked at the Edge with 2003 documentation here: http://technet.microsoft.com/en-us/library/bb124011%28EXCHG.80%29.aspx
, but not all that is applicable for my 2010 environment.
Thanks in advance!