i have installed Openfire and it is running quite decently, fulfilling all desired functions. However some users appear twice in our chat client (Spark, Pidgin), with kinda same/different JIDs for example: firstname.lastname@example.org/Lastname AND email@example.com/Firstname Lastname. So as you can see they appear with only Lastname and Firstname Lastname.
LDAP authentication is enabled and domain users are using different chat clients.
Does anyone know why it’s like this?