Phamm is a useful PHP front-end providing role-based administrative access to virtual services using an LDAP back-end.

If you are looking for a Postfix LDAP Front-end Phamm could be a good solution. Other MTA's can be used like qmail-ldap, Courier, Exim and Dovecot.

Phamm works with a plug-in system: the typical service is a mail server with virtual mail domain support, but plug-ins are also available for FTP, web proxying, and so on. The use of XML descriptor files simplifies creating new plugins or customizing existing ones.