I recently finished an implementation of sendmail/mimedefang/maildrop with virtual users in LDAP all mapped to a single local user. In order to accomplish this I added some functionality to maildrop which is included in the patch attached to this email.

In short this patch allows users to be looked up in an LDAP server and mapped to a single local virtual user with mail delivered into virtual mailboxes in home directories. This enables the LDAP record to remain untouched while delivering mail to locations other than the users home directory.

The patch adds the following configuration options to maildropldap.config so that it can be used:

# VIRTUAL HOSTING OPTIONS # # map_virtual_user - if set, maps all users to the default_uid/gid below, ignori ng # their uid/gid number in the ldap entry. This enables all mailboxes to be # owned by a single local user. #map_virtual_user 1

# homedirectory_prefix - if set, home directories are constructed by appending # the uid to this prefix instead of looking them up. #homedirectory_prefix /var/mail/virtual

# homedirectory_create - create the home directory if it doesn't exist. This is # done in the ldap code since the rest of maildrop relies on being able to acces s # the home directory. #homedirectory_create 1

# maildir_prefix - location of the users maildir from their home directory # disable to lookup the maildir in the ldap server. #maildir_prefix ./Maildir

The patch can be applied using a standard: 'patch -p0 < ldap-ext-1.6.0-1.0.0.patch' against the root of the maildrop 1.6.0 sourcetree.