I dont know anything about it, bit apparently exchange has moderates recipients https://learn.microsoft.com/en-us/exchange/recipients-in-exchange-online/moderat

I dont know anything about it, bit apparently exchange has moderates recipients https://learn.microsoft.com/en-us/exchange/recipients-in-exchange-online/moderated-recipients-exo/moderated-recipients-exo https://learn.microsoft.com/en-us/exchange/recipients-in-exc...