The problem is that sometimes the SenderSubID contains the ':' character, and that totally messes up the JMX ObjectName. For instance, if the SessionSubID=ABC:ABC, the JMXExporter will create a name that violates the JMX naming spec.

The culprit code is below, which basically creates an ObjectName of the form "org.quickfixj:key1=value1,key2=value2,key3=value3". If any key or value has a ':' or a '=' or a ',' in it, it will be messed up. These characters should be escaped, like with '_'.

public class ObjectNameFactory {

private StringBuffer sb = new StringBuffer();

public void addProperty(String name, String value) {
if (value != null && value.length() > 0) {
if (sb.length() > 0)

sb.append(name).append('=').append(value);
}
}

public ObjectName createName() throws MalformedObjectNameException

}