We are trying to establish an Openfire server for intra-company IM communication. In our test environment, we installed openfire 3.7.1 with LDAP authentication. Some users using Spark client can connect successfully, but others cannot login with error message "Invalid username or password".
The AD is based on Windows 2008 R2 domain and the password policy forces the users to have complex passwords using various symbols.
The openfire info log returns the error "org.jivesoftware.openfire.net.SASLAuthentication - User Login Failed. PLAIN authentication failed for: ".
Is this a bug of openfire server? Is there a solution of this problem? By the way, it seems a very good and promising IM server.