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https://issues.apache.org/jira/browse/JAMES-3819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17686298#comment-17686298
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Maxim Solodovnik commented on JAMES-3819:
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[~btellier] it seems "gsoc2023" label is incorrectly spelled :(((
> [GSOC] James as a (distributed) MX server
> -----------------------------------------
>
> Key: JAMES-3819
> URL: https://issues.apache.org/jira/browse/JAMES-3819
> Project: James Server
> Issue Type: Improvement
> Components: SMTPServer
> Reporter: Benoit Tellier
> Priority: Major
> Labels: gscoc2023, gsoc
>
> h3. Why ?
> Alternatives like Postfix...
> - Do not offer a unified view of the mail queue across nodes
> - Requires statefull persistent storage
> Given Apache James recent push to adopt a distributed mail queue based on
> Pulsar supporting delays (JAMES-3687), it starts making sense developing
> tooling for MX related tooling.
> I propose myself to mentor a Gsoc on this topic.
> h3. Benefits for the student
> At the end of this GSOC you will...
> - Have a solid understanding of email relaying and associated mechanics
> - Understand James modular architecture (mailet/ matcher / routes)
> - Have a hands-on expertise in SQL / NoSQL working with technologies like
> Cassandra, Redis, JPA...
> - Identify fix and solve architecture problems.
> - Conduct performance tests and develop an operational mindset
> h3. Inventory...
> James ships a couple of MX related tools within smtp-hooks/mailets in default
> packages. It would make sense to me to move those as an extension.
> James supports today...
> *checks agains DNS blacklists*. `DNSRBLHandler` or `URIRBLHandler` smtp hook
> for instance. This can be moved as an extension IMO.
> We would need a little performance benchmark to document performance
> implications of activating DNS-RBL.
> Finally as quoted by a gitter guy: it would make more sens to have this done
> as a MailHook rather as a RcptHook as it would avoid doing the same job again
> and over again for each recipients. See JAMES-3820 .
> *Grey listing*. There's an existing implementation using JDBC as an
> underlying storage.
> Move it as an extension.
> Remove JDBC storage, propose 2 storage possibilities: in-memory for single
> node, REDIS for a distributed topology.
> Some work around *whitelist mailets*? Move it as an extension, propose JPA,
> Cassandra, and XML configured implementations ? With a route to manage
> entries in there for JPA + Cassandra ?
> I would expect a student to do his *own little audit* and come up with extra
> suggestions!
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