New-SendConnector -Name “Internet” -Usage Internet -AddressSpaces “*” -SourceTransportServers “N2Hub-01” -DNSRoutingEnabled:$true -UseExternalDNSServersEnabled:$true
And this to allow anonymous connections
Set-ReceiveConnector -Name “Default Server Name” -Server N2Hub-01 -PermissionGroups AnonymousUsers,ExchangeUsers,ExchangeServers,ExchangeLegacyServers