Benoit Tellier created JAMES-2912:
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Summary: RemoteDelivery: add a onSuccessProcessor
Key: JAMES-2912
URL: https://issues.apache.org/jira/browse/JAMES-2912
Project: James Server
Issue Type: New Feature
Components: Matchers/Mailets (bundled), Remote Delivery
Reporter: Benoit Tellier
Currently remote delivery allows to customize a mail handling upon error via
the `bounceProcessor` that gets executed upon final failure.
We should also allow a user to customize handling of a remote delivered mail
success. I propose to do it via execution of a `onSuccessProcessor` property to
allow further mailet execution on remote delivered emails.
Adding the configuration option in RemoteDeliverConfiguration and handling the
fully succeeded case in DeliveryRunnable is easy, however current
implementation of MailDelivrer do enforce some harmful "hardcoded" behaviour
upon partial delivery failures: bouncer might get called directly, and
succeeded recipients are dropped silently. I believe that a quality
implementation will return a list of results (result including mail addresses)
so that DeliveryRunnable can enforce all success/failure policies.
Integration tests for this feature should of course be written for full success
and also for partial failure (be them temporary or not), and take MX retries
into account. Such tests can be written within `server/mailet/integration-test`
using the MockSmtpServer.
As a side note, such a feature might be a first step of JMAP EmailSubmission
per-recipient delivery notification implementation.
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