Speedy, thanks
Actually my problem was the search filter. I forgot to put the OU at the ldap.SearchFilter property, and the 'Spark' group was in there.
Now the integration with AD is OK. But there is another problem:
The user list is taking too long to show the users. After 3 minutes the users appears (only those that are 'Spark' group members).
When I try to list the groups it's worse. It takes about 10 minutes to show the first page; After that, if I try to edit some group, in order to setup group sharing, it takes a long time and I just give up.
I've out searched for some help and tried to change some properties, as they tried here (http://community.igniterealtime.org/thread/43874), but without success.
Do you have any idea of what can be wrong?
Thanks a lot!!!
Cheers!