Kolab ADC is a Microsoft Active Directory extension which integrates the Kolab groupware and messaging server into an Active Directory environment. Kolab ADC allows administrators to

• manage accounts on the Kolab server from Microsoft's Management Console (MMC) Active Directory Users and Computers extension
• manage vacation (out of office) settings
• set mailbox quota
• configure mailbox delegations.

All Kolab account properties can be configured through the MMC, eliminating the need to perform per-user administrative tasks on both the Active Directory and the Kolab server.