Hi Sirs,
We have one mail server zimbra, and want to migrate some users from Zimbra to o365.
We could migrate for example 10 users from zimbra to o365 (by imap migration, csv etc) assigned licenses.
As far as I know in order they (migrated users) could work on o365 completely we have configure dns settings on domain which we selected as default EAC. If we add the records which are required, the zimbra wouldn't start work properly. But we want to keep both servers as online. What should we do in further in order both servers could send email to each other (send\receive from\to internal\external emails)
If sender (doesn't matter if he external or user zimbra) send an email to the user o365, email anyway comes to zimbra server.
Hope I could explain the situation.
Thank you!