Benoit Tellier created JAMES-3708:
-------------------------------------
Summary: NPE in remote delivery
Key: JAMES-3708
URL: https://issues.apache.org/jira/browse/JAMES-3708
Project: James Server
Issue Type: Bug
Components: James Core, Remote Delivery
Affects Versions: master
Reporter: Benoit Tellier
h2. What
{code:java}
14:18:14.713 [ERROR] o.a.j.t.m.r.d.MailDelivrer - Generic exception = permanent
failure: null
java.lang.NullPointerException: null
at
com.google.common.base.Preconditions.checkNotNull(Preconditions.java:889)
at
com.google.common.collect.ImmutableSet$Builder.add(ImmutableSet.java:517)
at
java.base/java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
at
java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
at java.base/java.util.Collections$2.tryAdvance(Collections.java:4747)
at
java.base/java.util.Collections$2.forEachRemaining(Collections.java:4755)
at
java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at
java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at
java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
at
java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at
java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
at
org.apache.james.transport.mailets.remote.delivery.InternetAddressConverter.convert(InternetAddressConverter.java:36)
at
org.apache.james.transport.mailets.remote.delivery.MailDelivrer.tryDeliver(MailDelivrer.java:118)
at
org.apache.james.transport.mailets.remote.delivery.MailDelivrer.deliver(MailDelivrer.java:87)
at
org.apache.james.transport.mailets.remote.delivery.DeliveryRunnable.attemptDelivery(DeliveryRunnable.java:146)
at
org.apache.james.transport.mailets.remote.delivery.DeliveryRunnable.lambda$processMail$3(DeliveryRunnable.java:123)
at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:57)
at reactor.core.publisher.Mono.subscribe(Mono.java:4400)
at
reactor.core.publisher.MonoSubscribeOn$SubscribeOnSubscriber.run(MonoSubscribeOn.java:126)
at reactor.core.scheduler.WorkerTask.call(WorkerTask.java:84)
at reactor.core.scheduler.WorkerTask.call(WorkerTask.java:37)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at
java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
{code}
h2. Why ?
Due to too relaxed parsing rules in MailAdress we end up accepting invalid
email addresses as part of incoming SMTP addresses.
Example:
{code:java}
[email protected]
a@#b.com
a\[email protected]
{code}
However javax.mail is not able to work with such addresses.
This is problematic when:
- We compose a message based on SMTP envelope (eg: bounces)
- We rely on javax mail when we send emails to remote SMTP servers (remote
delivery)
h2. Proposed solution
Stricter parsing in MailAddress POJO. Reject those invalid addresses that we
don't know how to handle.
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