I am in the process of migrating an Exchange 2003 server onto Exchange 2010 on a 2003 Server based domain. A plan is written but I have a question regarding how external users are going to be connected during the transition and how it is best set this up, which I hope someone could help with?
The Exchange server is to have the 3 standard roles on one system.
At present our external users connect via https://webmail.acompanyname.com/exchange
Our mobile phone users connect in with the exchange setup option pointing to webmail.acompanyname.com
We have an external IP address that the firewall Nats to our internal exchange server.
My questions relating to this are:
When I start the install process of 2010 there is a section "Configure Client Access Server External Domain" - Enter the domain name you will use with your external Client Access servers"
I believe I tick the Client Access server role will be internet facing. For the Domain do I add in the current 2003 webmail.acompanyname.com ?
Once this is setup, how will I ensure that the external users will still receive mail on their devices and webmail will continue to work?
I have read about the legacy.webmail.acompanynam
e.com setting and adding an addition external IP address that points to the new 2010 webmail address. If this is the best way to do it, could someone please explain this and what is the process to do it?
Thanks in advance for any help!