Over a weekend myself and my CoWorker decided to create a mail system using ActiveDirectory as a backend database for authentication of usernames.
This allows us a single central database for users names/passwords.
- Windows 2003 Datacenter Server
- Debian Linux 3.0 (woody)
- Exim 3.35
- Cyrus 2.1.15
- Samba 3.0b2
to be continued...
We need to two entries to the exim config file (/etc/exim/exim.conf). The director entry (active_directory_user) takes a (local) email address after alias expansion (remember, order is important) and decides whether the mailbox exists and if so, what transport should be used to deliver the mail. The transport entry (local_delivery_cyrus) will use cyrdeliver to pass the resolved mail to the cyrus mailbox and will return an error if the mailbox doesn't exist.
driver = aliasfile
search_type = ldapm
query = "user=\"cn=admin,ou=Accounts,dc=domain,dc=co,dc=nz\" pass=\"Secret12\" \
transport = local_delivery_cyrus
- driver = pipe
command = /usr/sbin/cyrdeliver $local_part
user = cyrus
group = mail
See LDAPNotes for more information on LDAP Urls / Searches.
- In the ldap search query, the attribute sAMAccountName is the pre windows 2000 Logon name (username only), the Windows 2000 logon name is stored in userPrincipalName (includes @domain.co.nz). Their email address is stored in the mail attribute (firstname.lastname@example.org or email@example.com) -- GerwinVanDeSteeg