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https://issues.apache.org/jira/browse/JAMES-2557?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tellier Benoit closed JAMES-2557.
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> NULL_SENDER throws an error in Dlp
> ----------------------------------
>
> Key: JAMES-2557
> URL: https://issues.apache.org/jira/browse/JAMES-2557
> Project: James Server
> Issue Type: Bug
> Components: Mailet Contributions
> Affects Versions: master, 3.1.0
> Reporter: Tellier Benoit
> Priority: Major
> Fix For: 3.2.0
>
>
> Watching Kibana logs I got this recurring error:
> {code:java}
> Exception calling dlp.Dlp: NULL sender '<>' do not have domain part
> java.lang.IllegalStateException: NULL sender '<>' do not have domain part
> at org.apache.james.core.MailAddress$1.getDomain(MailAddress.java:87)
> at org.apache.james.transport.matchers.dlp.Dlp.matchingRule(Dlp.java:76)
> at
> org.apache.james.transport.matchers.dlp.Dlp.lambda$findFirstMatchingRule$0(Dlp.java:72)
> at java.util.Optional.flatMap(Optional.java:241)
> at
> org.apache.james.transport.matchers.dlp.Dlp.findFirstMatchingRule(Dlp.java:72)
> at org.apache.james.transport.matchers.dlp.Dlp.match(Dlp.java:55)
> at
> org.apache.james.mailetcontainer.impl.camel.MatcherSplitter.split(MatcherSplitter.java:109)
> at sun.reflect.GeneratedMethodAccessor70.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.camel.component.bean.MethodInfo.invoke(MethodInfo.java:481)
> at
> org.apache.camel.component.bean.MethodInfo$1.doProceed(MethodInfo.java:300)
> at
> org.apache.camel.component.bean.MethodInfo$1.proceed(MethodInfo.java:273)
> at
> org.apache.camel.component.bean.AbstractBeanProcessor.process(AbstractBeanProcessor.java:187)
> at
> org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:109)
> at
> org.apache.camel.component.bean.AbstractBeanProcessor.process(AbstractBeanProcessor.java:70)
> at
> org.apache.camel.language.bean.BeanExpression.invokeBean(BeanExpression.java:200)
> at
> org.apache.camel.language.bean.BeanExpression.evaluate(BeanExpression.java:124)
> at
> org.apache.camel.language.bean.BeanExpression.evaluate(BeanExpression.java:135)
> at
> org.apache.camel.processor.Splitter.createProcessorExchangePairs(Splitter.java:127)
> at
> org.apache.camel.processor.MulticastProcessor.process(MulticastProcessor.java:241)
> at org.apache.camel.processor.Splitter.process(Splitter.java:122)
> at
> org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:548)
> at
> org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201)
> at org.apache.camel.processor.Pipeline.process(Pipeline.java:138)
> at org.apache.camel.processor.Pipeline.process(Pipeline.java:101)
> at
> org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201)
> at
> org.apache.camel.component.direct.DirectBlockingProducer.process(DirectBlockingProducer.java:53)
> at
> org.apache.camel.processor.SharedCamelInternalProcessor.process(SharedCamelInternalProcessor.java:186)
> at
> org.apache.camel.processor.SharedCamelInternalProcessor.process(SharedCamelInternalProcessor.java:86)
> at
> org.apache.camel.impl.ProducerCache$1.doInProducer(ProducerCache.java:541)
> at
> org.apache.camel.impl.ProducerCache$1.doInProducer(ProducerCache.java:506)
> at
> org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:369)
> at
> org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:506)
> at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:229)
> at
> org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:144)
> at
> org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:161)
> at
> org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:168)
> at
> org.apache.james.mailetcontainer.impl.camel.CamelMailetProcessor.service(CamelMailetProcessor.java:68)
> at
> org.apache.james.mailetcontainer.lib.AbstractStateCompositeProcessor.service(AbstractStateCompositeProcessor.java:84)
> at
> org.apache.james.mailetcontainer.impl.JamesMailSpooler.lambda$run$0(JamesMailSpooler.java:163)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> It cames from the Dlp part (Dlp.java):
> {code:java}
> private Optional<DLPConfigurationItem.Id> findFirstMatchingRule(Mail
> mail) {
> return Optional
> .ofNullable(mail.getSender())
> .flatMap(sender -> matchingRule(sender, mail));
> }
> private Optional<DLPConfigurationItem.Id> matchingRule(MailAddress
> address, Mail mail) {
> return rulesLoader.load(address.getDomain()).match(mail);
> }
> {code}
> Since `mail.getSender()` returns a `NULL_SENDER` and not a `null` value,
> `matchingRule` is executed, since it breaks the LSP, it breaks our code.
> There are two solutions:
> * Strengthening `MailAddress`
> * Checking `MailAddress.isNullSender()`
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