Email domain used on two exchange servers in different AD domains?

Email domain used on two exchange servers in different AD domains?

Post by marsh » Mon, 14 Sep 2009 07:11:28



We currently have a NT domain with Exchange 5.5. We have looked into
upgrading our domain before but the license cost was always a brick
wall. We are now investigating a staggered migration.
What we are looking at is testing this setup up with a new domain with
Windows Server 2008 and Exchange 2070/2010. I'm hoping to setup a trust
relationship between the two domains but I've read Exchange 2070 will
not talk to Exchange 5.5 so I need some kind of solution. Is it
possible to setup Exchange 5.5 to forward mail for user to Exchange 2008
and also setup Exchange 2008 to use the Exchange 5.5 server to send
mails out (and possibly keep user mailboxes on both servers)?

Thanks,
Stuart


--
marshy
http://www.yqcomputer.com/
 
 
 

Email domain used on two exchange servers in different AD domains?

Post by Lanwench [ » Mon, 14 Sep 2009 12:19:51


Have you considered exmerge? It might be your easiest route to E2007.

 
 
 

Email domain used on two exchange servers in different AD domains?

Post by Tony Brow » Fri, 18 Sep 2009 05:27:39

Hi Stuart,

If you want to migrate from 5.5 > 2007, then you'll have to have a temporary
server that'll sit in the middle to facilitate this. It's not an issue if
you've got either a load of kit - or if you're going to be running a virtual
environment.

I'd never really do an in place upgrade of any exchange server (you can't
with 2007 onwards anyway).

Without going into too much detail.... and apologies if I miss any steps.

First things first - you need to upgrade your domain to Active Directory.

You will have to have at least one 2003 DC - and make it a global catalog.

Install an active directory connector that'll sync between the Exchange &
Active Directory environment.

Install Exchange 2003 on a new server - and move the mailboxes to that box,
test everything - move public folders etc... then decommission the old 5.5
box.

Then install a new 2007/2010 box, and move all the mailboxes and Public
folders to that.

There are loads of guides on exactly how to do this that go into loads more
detail - msexchange.org is a good start.

The easiest route really depends on the number of mailboxes and complexity
of your windows environment. - As Lanwench says - it might be better to just
ignore the 'book' way of doing it - and exporting - clean installing then
importing due to the requirement of loads of hardware (and time).

Tony Brown MCSE +M +S
www.phillipstaylorbrown.com



"Lanwench [MVP - Exchange]"