I am new to ZImbra and still am not sure if I should disturb my working email system (postfix/dovecot), ldap, mailscanner(SA, calmav) to Zimbra.

I have a master Ldap address book I would like to migrate to Zimbra. I would like to have the same date available to all users. I am not sure how well this would work in GAL vs shared address lists between individual accounts. Any suggestions on migrating and organizing my contacts for group use would be appreciated.

Steven