This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(57.599999999999994, 79%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJB%3C/text%3E%3C/svg%3E)
Hello everyone,
My company recently bought licenses for Microsoft 365 E3.
For the moment our domain, mail, exchange etc. are in OVH, I'm in charge of the migration of everything we have in OVH (except domain) to Microsoft. My task is to migrate our exchange accounts from OVH to Microsoft, which includes Exchange mail addresses, MX mail, redirection, mailing lists etc...
But I don't know where to begin, for the moment I configured the domain in Microsoft, I have created the users, assigned to them a license, configured their aliases and that's all. I would like to make the changes smoothly, but I have no idea where/how to start.
Another point is that I don't really know the correspondence between OVH and Microsoft in terms of email addresses, for example we have redirects and mailing lists, I've already tried to search in Microsoft, but I don't really know how to proceed, using a distribution group?
Thanks in advance.
Best regards.
@Julien bastin
As this issue is more realted to Exchange instead of OOS, I would modify the tag. Thanks for your understanding.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(25.6, 67%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJS%3C/text%3E%3C/svg%3E)
Is there any update about your question?
I would like to comfirm more information about your current environment, since we are not familiar with OVH.
How did you configure your Exchange server in OVH, what's the Exchange server version and AD version? If OVH just works as a virtual server (just like hyper-v/vmas...), we could consider your migration is a type of Migrate mailboxes from Exchange Server
And do you want to make your environment a cloud only one(all in O365) or still want to keep the Exchange server in OVH etc...? For the cloud-only environment, we consider using cutover migration to migrate your users, however it may not like you expected make the changes smoothly. Another method is creating a hybrid environment with your on-prem server. (It is supported to decomission your on-prem server if you don't need them anymore) You could use the Mail migration advisor to get step-by-step guide to help you configure the hybrid. Note to log into your Microsoft 365 or Office 365 organization when you open this link.
If your current server doesn't like the point I mentioned above, other ways supported to migrate your users and data are mentioned below in the official document as well: Use the Import Service to migrate PST files or if the current server is imap supported, use Migrate email from another IMAP-enabled email system
And for the mail redirct, in Exchange online we could use mail flow rule to meet such requirements: Mail flow rule actions in Exchange Online. There are many types of recipient/groups types in o365: Recipients in Exchange Online and Compare groups
If an Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
Hello @Joyce Shen - MSFT
Thank you for your reply.
The exchange configuration was already there when I came into my company, the exchange server is hosted by OVH directly, I don't know exactly how it works. We just buy new exchange accounts on OVH and get an email from OVH with the new account. That's all I know, and we have our domain in OVH, and 4 MX records for the mails.
The best thing should be to have a cloud only one (all in O365), all the users are already configured with an email address in O365, and we have currently licenses for Microsoft 365 Business Standard.
But we have also some shared emails for support and MDM, I guess the best way is using shared mailboxes ?
Basically, my colleagues and I have 3 mails configured on our MAC :
About email redirection, it looks like we can only redirect one email to another, what we have is redirection from one email to some.
I would like my colleagues to have to change nothing, on their MAC they have the three accounts set, and configured with "Manage automatically the connection settings", so I guess if I change the MX records to point to the Microsoft "URL" it should work ?
Thank you for your help.
Best regards.
Thanks for providing detailed information above. According to your description, your Exchange server seems to be managed by OVH, if so we cannot do much in backend. The only supported way is to export the user data to PST and import them to O365 accounts.
And if you have point your MX record to O365, then newly come emails will be delivered to your O365 mailboxes.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(64, 38%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJN%3C/text%3E%3C/svg%3E)
Hi @Julien bastin ,
We are in the same situation: we want to migrate our Exchange accounts from OVH to Microsoft365, but we want to leave the SMTP accounts at OVH.
I found this guide, I don't know if it works for you: /https://bmpafeblog.files.wordpress.com/2017/04/office365migration-steps.pdf
Any news with your process?
Hello @JSebastián ,
Thank you for your reply.
For the moment nothing has changed, I'm in the process of making changes in exchange. I'm just stuck, because I don't find how to redirect emails from a mailbox (which doesn't exist) to several other mailboxes, or maybe I can keep the redirection directly in OVH? And just delete the Exchange accounts in OVH.
Best regards.
I think the process starts with the migration of the emails from EXCHANGE from OVH to EXCHANGE from M365, and apparently there is an automatic tool, and if not, there is the option to do it with the PSTs.
The redirection is then done by modifying the MX records in the OVH DNS.
Could you try it?
Any progress so far?