Outlook Issue connecting to mailbox

We have a user who is relocating to a different office (London) from our HQ in Boston.  The London office is a child domain of the Boston office, all within the same forest.  In Boston, we have Exchange 2010 running, but in London we are still on Exchange 2007.  I disabled the user's mailbox from Exchange 2010 in Boston, then created a new user account in London.  Then I re-connected the disconnected mailbox to the new account in London.  Now, when attempting to connect Outlook to the mailbox that lives in Boston, I get the following message "Cannot open your default e-mail folders.  Microsoft Exchange is not available.  Either there are network problems or the Exchange server is down for maintenance."  Any thoughts on how to resolve this?
steffianAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

AmitIT ArchitectCommented:
Why you disabled it. You can move mailbox to London server. Or create new ID and mailbox and merge old mailbox data.

Also run clean-mailboxdatabase command on 2010 server and check again.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Exchange

From novice to tech pro — start learning today.