Avatar of Ravi Matharu
Ravi Matharu
Flag for United Kingdom of Great Britain and Northern Ireland asked on

Block Outlook clients when accesing O365 externally

Hi,

We are migrating from Exchange to O365, we are also using ADFS 3.0.

I have been asked to prevent Outlook 2010 and 2016 clients from accessing mail when off the corporate network. Users must be able to still access their email externally via Office.com and via Active Sync for BB.

I'm not sure where to start and have to produce a matrix of what is achievable without Conditional Access as we do not have licenses.

Thanks
ExchangeMicrosoft 365Outlook

Avatar of undefined
Last Comment
Vasil Michev (MVP)

8/22/2022 - Mon
Shreedhar Ette

Vasil Michev (MVP)

In addition to the method outlined above, there is a new feature in Exchange Online that might help you with the request, namely Client Access Rules: https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/client-access-rules/client-access-rules
Ravi Matharu

ASKER
Thanks for your quick responses,
Can you confirm that this will work on Outlook 2010 and Outlook 2016 clients?
Also should Modern Auth be enabeled or disabled?

Thanks
I started with Experts Exchange in 2004 and it's been a mainstay of my professional computing life since. It helped me launch a career as a programmer / Oracle data analyst
William Peck
ASKER CERTIFIED SOLUTION
Vasil Michev (MVP)

THIS SOLUTION ONLY AVAILABLE TO MEMBERS.
View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
GET A PERSONALIZED SOLUTION
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.