Office 365 Migration question

A company has a third party to host their emails on the 3rd party exchange 2010. All the users of this company is able to access emails using regular OWA and outlook. This company wanted to migrate all its users to office 365 as they have the credentials to control MX records. The third party has limitations in creating migration endpoints and IMAP all access has to happen using the Outlook anywhere.

The question here is without migration endpoint or IMAP having only the end users credentials is there a possibility of office 365 migration?
Joe FrixonBusiness OwnerAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Vasil Michev (MVP)Commented:
PST export/import or 3rd party tools...
1
ncomperCommented:
without access to the sever you will need to complete the task the hard way (import export) i would setup the new 365 infrastructure first and create all related user accounts. Ensure all DNS records are resolving correct.

48 hours before the migration reduce the TTL on the MX records, Migrate the MX records to the 365 infrastructure and complete some test mails to ensure the new domain is working (you may need to clear outlook cache for it to go to the new 365 infrastructure) once complete and tested export all users accounts via outlook (be sure no emails are dropping in via the old MX record) and store secure. Create new profiles for all users and ensure Autodiscover is now working as expected (connecting to 365 without issue). Connect all new user profiles to 365 and test mail flow internally and externally. Attached previous PST archives to outlook and then Drag/Drop within outlook to the new Inbox.

Sit back have a few Cups of Tea and wait, log into the users Webmail in 365 as proof that emails are syncing. Repeat for all other users (you may want to take an archive copy of all PST files in case some are lost/dropped.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Office 365

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.