--- title: "Easy Office 365 Tenant Migrations | DuoCircle" description: "We regularly help businesses migrate from one Office 365 to another Office 365 tenant." image: "https://www.duocircle.com/images/og-default.png" canonical: "https://www.duocircle.com/blog/mx-backup/easy-office-365-tenant-migrations/" --- Quick Answer Office 365 tenant-to-tenant migration carries a documented risk of email loss because Microsoft says a new tenant may be inaccessible for up to 24 hours during cutover. Microsoft's recommended workaround is to point the primary MX record at an unreachable host so sending servers queue messages and retry for 24 hours, but some servers will return non-delivery reports rather than queue, depending on the sender. Backup MX services solve this by queuing all incoming mail during the migration window and delivering it to the new tenant once cutover completes. DuoCircle offers a tenant migration service that queues mail with geographic redundancy, technical support, and migration guidance for $200 per migration. More information is at tenantmigration.com. Share [ ](https://www.linkedin.com/sharing/share-offsite/?url=undefined%2Fblog%2Fmx-backup%2Feasy-office-365-tenant-migrations%2F "Share on LinkedIn") [ ](https://twitter.com/intent/tweet?text=Easy%20Office%20365%20Tenant%20Migrations&url=undefined%2Fblog%2Fmx-backup%2Feasy-office-365-tenant-migrations%2F "Share on X/Twitter") [ ](https://www.facebook.com/sharer/sharer.php?u=undefined%2Fblog%2Fmx-backup%2Feasy-office-365-tenant-migrations%2F "Share on Facebook") [ ](https://reddit.com/submit?url=undefined%2Fblog%2Fmx-backup%2Feasy-office-365-tenant-migrations%2F&title=Easy%20Office%20365%20Tenant%20Migrations "Share on Reddit") [ ](mailto:?subject=Easy%20Office%20365%20Tenant%20Migrations&body=Check out this article: undefined%2Fblog%2Fmx-backup%2Feasy-office-365-tenant-migrations%2F "Share via Email") ![DuoCircle blog post image](https://media.mailhop.org/duocircle/images/2019/04/Office-365-migration.jpg) We regularly help businesses migrate from one Office 365 to another Office 365 tenant. A verycommon use case involves the transition between (_or within_) email providers or splitting out business units or the migration of tenants between organizations. Microsoft warns that a new Office 365 tenant may be inaccessible for as long as 24 hours during the migration, which means there is a chance for email to be lost. [Microsoft’s guide to migrating email accounts between Office365 tenants](https://docs.microsoft.com/en-us/exchange/mailbox-migration/migrate-mailboxes-across-tenants) includes the following instruction: > _Change your primary MX record from Office 365 to domain that is not reachable, i.e. “unreachable.example.com”. Internet mail servers attempting to deliver new mail will queue the mail and attempt redelivery for 24 hours. Using this method, some email may return a non-delivery report (NDR) depending on the server attempting to deliver the email. If this is a problem use an MX record backup service. There are many third party services that will queue your email for days or weeks. Once your migration is complete, these services will deliver the queued mail to your new Office 365 tenant._ [![office 365 migration](https://media.mailhop.org/duocircle/images/2019/04/smtp-service-3578.jpg)](https://media.mailhop.org/duocircle/images/2019/04/smtp-service-3578.jpg) If non-delivered email is unacceptable, our backup MX service can be employed to temporarily queue all emails during the [office 365 migration](/email/tenant-migration), we can queue your email while your tenant is migrated with geographic redundancy, technical support and expert guidance for $200 for the migration. Take a look at for additional information ![Brad Slavin](https://media.mailhop.org/dmarcreport/images/team/brad-slavin.jpg) Brad Slavin General Manager General Manager at DuoCircle. Product strategy and commercial lead across the email security portfolio. ## Secure your email infrastructure Protect, authenticate, and deliver. Contact our team to find the right solution. [Contact Sales](/contact/) [Explore Products](/products/) ## Related Articles [ mx-backup 2m Office 365 Outage Feb 23, 2016 ](/blog/mx-backup/office-365-outage/)[ mx-backup 6m What is Backup MX, and What Should You Look For? Nov 1, 2018 ](/blog/mx-backup/what-is-backup-mx-and-what-should-you-look-for/) ```json {"@context":"https://schema.org","@type":"Organization","name":"DuoCircle LLC","url":"https://www.duocircle.com","logo":{"@type":"ImageObject","url":"https://www.duocircle.com/images/duocircle-logo.png"},"description":"DuoCircle is a portfolio of specialized email products covering protection, authentication, delivery, and routing. We deliver about 90% of category-leader capability at roughly half the price, backed by experts who own the outcome. 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