You run into an issue when you want to remove a synced recipient from the GAL even if you set msExchHideFromAddressLists on $true

You run into an issue when you want to remove a synced recipient from the GAL even if you set msExchHideFromAddressLists on $true
When your users tells you that legitimate emails comes into their junk folder and you find out that this email has as submitted host your local exchange server.