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Office 365 Email Redundancy RRS feed

  • Question

  • Due to the issues that people have seen today with office 365 I have a client who has Office 365 and wants to have their Email system be redundant and not rely 100% on Microsoft's services. Is there anyway of having an Exchange Server locally coexist with Office 365 and provide some kind of redundancy so if Microsoft's services go offline email would still function?

    Vincent Sprague

    Tuesday, June 24, 2014 9:00 PM

All replies

  • Hello,

    Have you read articles about Hybrid configuration http://technet.microsoft.com/en-us/library/jj200787(v=exchg.150).aspx ? Or here http://www.itguy.gr/2012/04/office-365-with-exchange-on-premises.html

    I hope it match with your scenario.


    Best regards,

    Riwut Libinuko
    SharePoint Architect, Singapore
    Microsoft MVP | SharePoint Server | Singapore
    Blog : http://blog.libinuko.com

    Wednesday, June 25, 2014 6:13 AM
  • I've read those before, the issue I see is that the mailbox can only exist in one place at a time, not both. So the way I read it is that there is no real way have having redundant access to your email. If your mailbox is in the cloud and the cloud goes down your screwed. If the mailbox is on your local server and your local server goes down, your screwed. There doesn't seem to be a way of having them in both places for true redundancy. The only option I can see would be to have a second Exchange server in Azure and a DAG between Azure and the Local Exchange server. That option doesn't use Office 365's email services at all.

    Vincent Sprague

    Wednesday, June 25, 2014 9:48 PM
  • Hi Vincent,

    You should look at <cite class="_ee">mimecast.com. They offer 100% redundancy as a wrap-around for Office 365. They become a second gateway service to Office 365, in the case of an outage emails will continue to flow without interruption and also access to archived mail till the service is restored.</cite>

    <cite class="_ee"></cite>

    Thursday, June 26, 2014 1:04 AM
  • Hi,

    You can work with MX weight.


    “Vote As Helpful” and/or “Mark As Answered” - Thiago Mendes da Silva - MCSE Communication - ITIL v3 Foundation - http://www.ucsteps.com/

    Thursday, June 26, 2014 1:38 AM
  • I'm trying to avoid 3rd party solutions but I'm thinking I may not have an option. MX weight is only going to help when it comes to receiving email. If a user's mailbox is on the cloud and it goes offline then the user can't access their email. MX record weight won't help in that instance.

    Vincent Sprague

    Thursday, June 26, 2014 2:12 AM
  • I would recommend viewing the following website. http://www.mimecast.com/services-for-office-365/

    It explains the configuration ensuring up time during an outage event of Office 365. With the capability of Send and Receive through Outlook and mobile devices.

    Tuesday, July 1, 2014 3:25 AM