Questions regarding Office 365

Good Afternoon All,

I am in the process of setting up Office 365 with Exchange Online and have made some progress.   I have a few concerns\questions about migrating from Exchange 2013 to the Exchange Online.  

We are looking at a Hybrid approach where half of our Mailboxes will reside on the onPrem Exchange Server, and our Remote Users will reside on Cloud.

When I move the DNS records,  all email will flow thru the Exchange Online portion of Office 365.   I only have licensing for 50 users for O365 and have licenses for the remainder onprem (another 50 users).   Will not having O365 licenses for my ON Premises users affect their ability to receive email?  i.e.  even if they don't have a license, will O365 still pass the email onto the on premises server?
Jeff RodgersNetworks & Communications Systems ManagerAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

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:
O365 will simply relay the mail, you dont need licenses for that.

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
Jeff RodgersNetworks & Communications Systems ManagerAuthor Commented:
Any indication for the SPF record?   When I include the IP address in the SPF record, I should include the Publicly routable IP address of the onPrem mail server as well?

i.e.  Microsoft recommends this

v=spf1 -all

but should I add the public IP so it reads like this?  Or do I use the internal IP address?

v=spf1 -all
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.