TLS authentication without a user mapped

[francois.beretti at gmail.com (François Beretti)]

Hi,

is it possible to do a SASL/EXTERNAL bind with a TLS certificate,
while no user in the directory is mapped to the certificate DN ?

If yes, is it possible then to give rights to certificate DN (so, to a
DN that is not in the directory) ?

I would like this if I don't want to store users in a directory
(because they already are in another one.

Thank you

Fran?ois