So many things seem to cause full traceback in the info logs. For example, I've disabled old SSL security, and now there are full tracebacks in the logs:
2015.05.18 10:10:04 org.jivesoftware.openfire.nio.ConnectionHandler - ConnectionHandler reports IOException for session: (0x00000035: nio socket, server, /172.16.0.204:65011 => /172.16.10.115:5222)
javax.net.ssl.SSLHandshakeException: SSL handshake failed.
at org.apache.mina.filter.ssl.SslFilter.messageReceived(SslFilter.java:507)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(D efaultIoFilterChain.java:542)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$6(DefaultIoFilterC hain.java:538)
at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceiv ed(DefaultIoFilterChain.java:943)
at org.apache.mina.core.filterchain.IoFilterEvent.fire(IoFilterEvent.java:74)
at org.apache.mina.core.session.IoEvent.run(IoEvent.java:63)
at org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTask(Ordere dThreadPoolExecutor.java:769)
at org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTasks(Order edThreadPoolExecutor.java:761)
at org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.run(OrderedThr eadPoolExecutor.java:703)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLHandshakeException: SSLv2Hello is disabled
at sun.security.ssl.InputRecord.handleUnknownRecord(Unknown Source)
at sun.security.ssl.InputRecord.read(Unknown Source)
at sun.security.ssl.EngineInputRecord.read(Unknown Source)
at sun.security.ssl.SSLEngineImpl.readRecord(Unknown Source)
at sun.security.ssl.SSLEngineImpl.readNetRecord(Unknown Source)
at sun.security.ssl.SSLEngineImpl.unwrap(Unknown Source)
at javax.net.ssl.SSLEngine.unwrap(Unknown Source)
at org.apache.mina.filter.ssl.SslHandler.unwrap(SslHandler.java:746)
at org.apache.mina.filter.ssl.SslHandler.unwrapHandshake(SslHandler.java:681)
at org.apache.mina.filter.ssl.SslHandler.handshake(SslHandler.java:567)
at org.apache.mina.filter.ssl.SslHandler.messageReceived(SslHandler.java:353)
at org.apache.mina.filter.ssl.SslFilter.messageReceived(SslFilter.java:488)
... 9 more
It makes troubleshooting troublesome, at best.