[Exim] LDAP server failure

Hi Guys,

i verify incoming recipients to my internal Lotus Domino LDAP server.
Problems occurs when my domino is down for problems and my ldap
connections timeouts. I'm thinking about:

- install an OpenLDAP server locally and try to sync users recipients
(with what?..it seems that they aren't compatible..maybe if i export and
import an ldif)

- export with an ldapsearch all recipients and write to a plain file and
then do an lsearch from exim

What do you suggest?

Thanks

Regards,

Riccardo