Hi, I dont know it is a Spark or Openfire problem. So We useing Openfire+Spark about 2 months and via LDAP aut. I had no problem so far this week. Spark one time a day lost connection the server, trying connect to the server but it can not. Can not connect Openfire to the LDAP or I dont know… Just one way to fix it, reconfigure the server and all things are good. Any idea?