Aliases / Secondary Lookups

[Jonathan Vanasco <jvanasco@mastersofbranding.com>]

I'm creating a directory for my office to serve as an office/client 
addressbook, as well as manage office email and internal/client site 
logins

To illustrate what I want to do, let me just work with the people/email 
interrelation

For the email component, the structure right now is...
      dn: fqdn=domain.com/net/org,ou=Email,o=mobwire,dc=redivi,dc=com
A person's record would be something like
      dn: cn=blah blah,ou=People,o=mobwire,dc=redivi,dc=com


What I'd like to do, is insert records below fqdn that would have the 
local part of the email address.  In this case, Exim would search for 
the localpart under the fully qualified domain name.  Rather than house 
the maildir in that entry, I'd rather try to set up some alias to the 
record under People -- so changing a user's Maildir will only require 1 
record update regardless how many fqdn's they have email at.  Right 
now, I've got exim doing an ldap search for the email address, 
returning the people record, then doing a second search on that people 
record for the actual maildir

I'd like to get that down to 1 search, if possible -- as its not just 
going to be an exim thing, but also used for web authentication and a 
half dozen other things.  I'm fairly convinced that this is the right 
way to do it -- having a single actual record, then pointers under 
various branches that i add/delete -- but I'm a little unsure of how to 
approach this.

Any suggestions?