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https://issues.apache.org/jira/browse/JAMES-3945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17879797#comment-17879797
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Florent AZAVANT commented on JAMES-3945:
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As Benoit Tellier’s intern, I will start to work on this feature. After some
brainstorm with him, here is the the functional breakdown we suggest:
# make it so that a mail to {{john+fol...@example.com}} is accepted and falls
into {{{}j...@example.com{}}}’s inbox ;
# perform subaddressing *without any rights management* in IMAP and SMTP;
# apply rights management: everyone can send to a folder / no one can send /
white list / black list ; on one / several / all folders ; etc ;
# make the whole thing work for JMAP.
As for the technical analysis, we would first work with
* {{{}MailAddress.java{}}}, to be able to parse {{john+fol...@example.com}} to
{{j...@example.com}}
* doing so, {{UsersRepository.getUsername(MailAddress mailAddress)}} would
output the same result and {{ValidRcptHandler}} as well as {{IsLocalRecipient}}
would be unchanged
then, we would build the subaddressing mailet, which would
* check the rights (maybe a new method in {{{}RightManager{}}}, or try with
{{{}listRights{}}})
* set the storage directive to the target folder
finally, we’ll implement integration tests for this feature.
> Sub addressing
> --------------
>
> Key: JAMES-3945
> URL: https://issues.apache.org/jira/browse/JAMES-3945
> Project: James Server
> Issue Type: New Feature
> Components: Mailet Contributions
> Reporter: Benoit Tellier
> Priority: Major
>
> Ref:
> en.wikipedia.org/wiki/Email_address#Sub-addressing
> rfc-editor.org/rfc/rfc5233
> That's a bit of a complex story to work with!
> As a starter :
> - ValidRcptHandler needs to accept sub-addresses of an existing user
> - IsLocalRecipient needs to accept sub-addresses of an existing user
> - LocalDelivery needs by default to accept email for sub addresses but
> delivery them into INBOX
> - And a SubAddressing mailet would check if the recipient did whitelist the
> sender for the target mailbox (k right) OR if the mailbox submission right is
> allowed for everybody (any)
> If so, then positions a storage directive for this email to go into the
> target mailbox for that recipient
> - Of course integration tests (/server/mailets/integration-testing )
> Contributions more than welcome on the topic.
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