[Exim] Putting aliases into LDAP?

    I'm looking for an example config of putting aliases into LDAP.
Specifically, I want to know about aliases that forward to several
different email addresses (either local, not local, or "virtual").

    Do those need to be several entries of the same attribute in LDAP?
Or would there be only a single attribute that has a comma-separated list
of forwarding addresses?  (Etc.)