[jira] [Closed] (JAMES-3801) RabbitMQ should NACK mail items it did fail to load

["Benoit Tellier (Jira)" <se...@james.apache.org>]

     [ https://issues.apache.org/jira/browse/JAMES-3801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benoit Tellier closed JAMES-3801.
---------------------------------
    Resolution: Fixed

> RabbitMQ should NACK mail items it did fail to load
> ---------------------------------------------------
>
>                 Key: JAMES-3801
>                 URL: https://issues.apache.org/jira/browse/JAMES-3801
>             Project: James Server
>          Issue Type: Bug
>          Components: rabbitmq
>    Affects Versions: 3.7.0
>            Reporter: Benoit Tellier
>            Priority: Major
>             Fix For: 3.8.0
>
>         Attachments: Screenshot from 2022-08-10 10-49-47.png
>
>
> See JAMES-3800
> We do encounter a timeout on top of OVH S3 blob store when reading emails. 
> RabbitMQMailQueue, upon loading exception, does not really handle those exception and let them propagate to the subscriber, here JamesMailSpooler, which handles the exception by just logging it.
> THis means the RabbitMQ messages of such emails are never acked nor nacked, stays unacknowledged forever. Unacknowledged messages keeps pile up until there is no space left for legitimate traffic.
> At this point the mailQueue consumption halts, James needs to be rebooted which effectively nack those messages.



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