How to create a "Global address list" using a Linux server

We're moving from MS Exchange Server to a Linux based mail server (using postfix). One of the features of the Exchange Server it's the "Global Address List" that it's avaliable to all users and it's automatically updated when a new is add. Our plan it's continue using Outlook
how mail client so, how can i create a address list in postfix to update automatically in outlooks ?

Thanks,