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java.lang.NullPointerException: 	at java.util.regex.Matcher.getTextLength(Unknown Source)	at java.util.regex.Matcher.reset(Unknown Source)	at java.util.regex.Matcher.(Unknown Source)	at java.util.regex.Pattern.matcher(Unknown Source)	at org.apache.james.transport.mailets.DSNBounce.createDSN(DSNBounce.java:377)	at org.apache.james.transport.mailets.DSNBounce.service(DSNBounce.java:204)	at org.apache.james.mailetcontainer.camel.CamelProcessor.process(CamelProcessor.java:66)	at org.apache.camel.impl.converter.AsyncProcessorTypeConverter$ProcessorToAsyncProcessorBridge.process(AsyncProcessorTypeConverter.java:50)	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)	at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)	at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)	at org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:99)	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)	at org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:299)	at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:208)	at org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:256)	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)	at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)	at org.apache.camel.processor.ChoiceProcessor.process(ChoiceProcessor.java:80)	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)	at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)	at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)	at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:68)	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)	at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)	at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)	at org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:99)	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)	at org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:299)	at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:208)	at org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:256)	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)	at org.apache.camel.processor.Pipeline.process(Pipeline.java:143)	at org.apache.camel.processor.Pipeline.process(Pipeline.java:78)	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)	at org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:299)	at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:208)	at org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:99)	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:91)	at org.apache.camel.processor.MulticastProcessor.doProcessParallel(MulticastProcessor.java:515)	at org.apache.camel.processor.MulticastProcessor.access$100(MulticastProcessor.java:73)	at org.apache.camel.processor.MulticastProcessor$1.call(MulticastProcessor.java:239)	at org.apache.camel.processor.MulticastProcessor$1.call(MulticastProcessor.java:231)	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)	at java.util.concurrent.FutureTask.run(Unknown Source)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)	at java.lang.Thread.run(Unknown Source)