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Posted to server-dev@james.apache.org by "Benoit Tellier (Jira)" <se...@james.apache.org> on 2021/04/30 07:23:00 UTC

[jira] [Created] (JAMES-3574) As a LMTP user I want to execute the mailet container

Benoit Tellier created JAMES-3574:
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             Summary: As a LMTP user I want to execute the mailet container
                 Key: JAMES-3574
                 URL: https://issues.apache.org/jira/browse/JAMES-3574
             Project: James Server
          Issue Type: Improvement
          Components: lmtp, MailStore &amp; MailRepository
    Affects Versions: 3.6.0
            Reporter: Benoit Tellier
             Fix For: 3.7.0


h3. Why?

LMTP is SMTP without a mail queue. Used inside a private network, with trusted hosts, the throughput is controlled upstream by the MTA/MX servers.

There is no sudden burst requiring buffering - buffering is done upstream.

James ships a LMTP implementation that mostly reuses the  SMTP stack.

Today it delivers emails directly in people mailboxes.

The mailet container allows a declarative, modular and extensible processing upon email reception and is one of James selling points. Sadly today LMTP users cannot leverage its power...

h3. How?

Write a `DataLineMessageHookHandler` that given an incoming LMTP transaction executes the mailet container.

Write a handler chain mirroring the default one, replacing the classical `DataLineMessageHookHandler` with the one executing the mailet container.

Write a unit test showing that upon an incoming LMTP transaction the mail is executed by a mock of the Mailet Container.

Finally write documentation concerning the handler chain.




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