DavMail

DavMail is a POP/IMAP/SMTP/Caldav/Carddav/LDAP Exchange gateway allowing

users to use any mail/calendar client with an Exchange server, even from

the internet or behind a firewall through Outlook Web Access. DavMail

now includes an LDAP gateway to Exchange global address book and user

personal contacts to allow recipient address completion in mail compose

window and full calendar support with attendees free/busy display.