Issue: Fail to send mail from Mobiles Devices office365-outlook-ADFS

In the organization there is an internal ADFS and an external ADFS Proxy.
Being connected through the Wi-Fi in the internal network, from the mobile devices using an office365 account and the Outlook application can not send the mails.
If I use a notebook or PC if I can do it but from mobile devices, no.
If I connect from the mobile via 4G or from an external network if it works.
The difference is that when I'm on the internal network the requests go to the internal ADFS and when I'm out of the network the requests go to the external ADFS Proxy.
Can there be any restrictions in the internal ADFS that blocks active sync communication from cell phones?
We validate the permissions in the network, routing and only see traffic to port 443 to different external IP addresses of lync, office and outlook.
Alvaro QuispeAsked:
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.

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

From novice to tech pro — start learning today.