Outgoing policy disabled, blocks or restricts popular services - please advise
So I thought about disabling the Outgoing policy since it allowed everything, but disabling it caused a few unhappy users.
Apps like WhatsApp worked with limited access. No video call, and the app is stuck connecting for a long time. Text messages eventually get sent/received, but with pain.
A lot of users complained email clients on their personal phones no longer worked.
Some users complained about their VPN not working; some were unable to access Plex.
Generally, some users started complaining about "slow" internet, so I assume a lot of stuff just didn't work properly.
I had to enable it again for now, but ultimately I want to have it disabled (I think).
I'm sure there will be hundreds of apps and services disrupted if this policy is disabled.
I'd like to restrict access but allow them basic stuff, such as WhatsApp (most likely other apps) or personal emails, on their phones.
Not sure how to proceed. Is it safe to keep the policy ON or OFF with individual policies specifying access to individual services? If so, is there a list of popular services I could configure to allow access? If I keep it disabled, I guess I have a lot to configure.
I'd appreciate your thoughts on this.