[SM-USERS] LDAP address book - per-user BaseDN?

[z6 <z6...@po...>]

I've been happily using the LDAP Query plugin for some time. However it
only seems to allow a BaseDN to be specified globally for all users.

I've experimented a bit with VLogin to attempt to supply a per-user BaseDN
for the address lookups (either constructed from the login name (1st
choice) or manually specified (2nd choice)), or to specify per-user LDAP
login credentials (3rd choice). I didn't really make much progress though.
Before I spend more time, can anyone tell me whether this is actually
possible, or if there is a better way?

I'm not too worried about enforcing segregation of address book entries
through access control - just about keeping the directory searches
separate for convenience.

Many thanks
Chris