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Want to switch from Google Mail back to Exchange Server

Hello,

I would like to switch my domain based email for 50 users which is currently hosted by Google Mail to Exchange 2010, using the same domain I'm using now without losing any mail.

Right now my MX records point to google's postini servers which then allow me to use gmail via the web to access my mail. How can I switch back to Exchange 2010?

Important, I need to transfer all my emails, contacts and calendar from Google to Exchange/Outlook.
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inetdee
Asked:
inetdee
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2 Solutions
 
Encrypted1024Commented:
Build your exchange server. Set each users gmail to forward messages to exchange mailboxes(you may have to set up an alias for each user in exchange). Users will still be able to recieve email to their gmail web access or their outlook at this point.  Connect outlook to gmail and download all of your messages and contacts into pst file. Connect outlook one by one to exchange. Import each users PST file. Then once all users are recieving mail to their outlook and have their pst imported, cut over your mx record. 0% down time, 05 lost email.
 
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inetdeeAuthor Commented:
What about contacts and calendars? That's a good partial solution for email only. Thanks so much for the very quick reply!!
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Encrypted1024Commented:
Well, gmail is a bit tricky. It does not line up exactly with Exchange. The folders are a bit different so it is a bit of a messy transition. If you connect Outlook to your gmail account using IMAP instead of POP3 it will pull your contacts, not sure about calendars. You may have to do some manual "fudging" afterwards though.
There is a calendar and contact sync too for outlook from Gmail but I think you have to pay for it or have the "pay" gmail service.
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SteveIsHeerCommented:
I have a similar situation... company is using gmail in their non-server environment (pier to pier) and currently their gmail addresses are set to "firstname@theircompany.com".  I'm implementing an SBS 2011 server and at this point have only setup the DNS record of "remote.theircompany.com" to point to the server's static IP.  There is a third party company that does the companies web page and it is live at "www-theircompany-com".  I have installed a Godaddy single site SSL certificate on the SBS server.  The SBS users emails are set to "FirstInitialLastname@theircompany.com".  Remote access to the server works flawlessly using Remote Web Workplace and RDP'ing into their workstations.  As  you see, both Google's and the SBS servers domain names are  "theircompany.com".  I can access the gmail no problem and have used Outlook to download all their emails.  I would assume since both ends use the same domain name in the address that I will have to skip the "forward email step" mentioned in the first solution above and just update the DNS records and kill the gmail accounts.  I can then create an alias in Exchange to add their original gmail address to their accounts so it catchs all email from clients that are still using the old version.  I did get an error in each users initial setup stating it could not send the Exchange/Outlook welcome message but completed all other setup functions ok.  I have not yet added the gmail aliases to their Exchange accounts.

I'm not exactly sure how to sever ties with Google as I have not done this particular email move before.  When I was logged into the admin account in the Google Apps admin page, I kept getting a page not found error trying to get to the DNS settings page.  That was the only page error on the site and I did navigate many of the settings pages to see what options were there.  Any direction on what the correct steps of doing this would be a great help!
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