QQ Mailbox APP can login my Exchange mailbox though I disable the device activesync.

Question

I have been disable the device to login my exchange mailbox.
Surely the built-mailbox cannot use also outlook app or foxmailbox app.
but if I install QQ APP on my phone ,I can still login my exchange mailbox.

Answer 1

Hello there,

I would suggest you try using the Powershell to disable the active sync and see if that helps .

Set-CasMailbox -Identity <MailboxIdentity> -ActiveSyncEnabled <$true | $false>

Also try the below steps and see if that helps.

In the Exchange admin center, navigate to Recipients > Mailboxes.
Double-click the user and go to the Mailbox features page. Under Mobile Devices, select Disable Exchange ActiveSync and Disable OWA for Devices, and answer Yes to both when prompted.
Under Email Connectivity, select Disable and answer Yes when prompted.

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Answer 2

I have disabled the the active sync by powershell ,in the admin center,the setting about ActiveSync and Disable OWA for Device are also been disabled.

Surely,I can't use OWA. Mobile phone with built-in email can't login our exchange mailbox , outlook app (install by App Store) also can't login,
but the QQ app still can login our exchange mailbox.

Athough I seeting the mobile policy ,it doesn't have any effect on the QQ app.

mailbox built-in --> can't connect the EX mailbox , can be detect as Mobile Model . the active policy is In force
outlook App --> can't connect the EX mailbox ，can be detect as Outlook for iOS and Android. the active policy is In force
Foxmailbox App --> can't connect the EX mailbox ， can be detect as foxmail . the active policy is In force
QQ APP --> still can connect the EX mailbox ，can't be detect as a device