Need help with new Exchange Server 2013 and ISP change
I'm in the process of trying to bring our email in house... Not done an Exchange server before.
We're on a local authority connection at the mo'... the domain being 'school.authority.sch.uk' who provide our mail too - Zimbra.
Have already set up Exchange 2013... that's fine.
I want the mail up and running before I switch ISP.
The thing is...
I'm going to get rid of the LA connection in Easter 2014 and replace it with either business broadband or a leased line - This will mean my outward facing IP address will change, and I'll lose the domain name 'school.authority.sch.uk'
(I've already got a .co.uk domain name that I need to change the MX record on, and I also need an SSL certificate for Outlook webmail).
What order do I do this in ????
a) Does my AD domain need to be named the same as my .co.uk domain name for Exchange to work ??
I.e mail.myschool.co.uk - If not, how does the forwarding work from the .co.uk to my Exchange server ??
Currently my AD domain is called 'school.authority.sch.uk' because that's how I inherited it - do I need to rename it ?
b) Do I need my new outward IP first ??
I'm stuck because I don't quite know what order to do this in and I need to make this a relatively seamless changeover.
All comments much appreciated ; ))