Thanks a lot,
Here is the ldap search request used for the loadtests :
ldapsearch -x -D "cn=admin,ou=CONTENT,o=alcatel,c=fr" -w secret -b "ou=REPOSITORY,ou=CONTENT,o=alcatel,c=fr" -h 18.104.22.168:389 'email@example.com' homeDirectory mailQuota mailpassword maillogin
The database contents 10000 subscribers under the dn: "ou=REPOSITORY,ou=CONTENT,o=alcatel,c=fr"
Each subscriber has a mailbox represented by a dn in database (dn: submxid= ...) and a phone (dn: pnnumber= ...) too.
So there are 2 levels in DIT
The 'maillogin' attribute belongs to the mailbox dn that is at the second level
In the slapd.conf, the database definition doesn't contain the maillogin attribute as index (perhaps is it the reason of my problem ??) => cf. slapd.conf in attachment
Example of a subscriber in ldif format:
Working Environment :
Linux redhat 7.3