LDAP server is AD 2008R2, port is standard (389). testing connection gives an unspecified error with nothing shown in /var/logs/openfire/. telnet on that host and port works, so it’s not a problem with network connectivity. how can i troubleshoot this problem?
EDIT: Openfire 4.1.6 (was the same with 4.1.5) installed on Ubuntu 16.04 x64 via official .deb file, JRE: openjdk-8-jre, database: Postgres.