Felix created JAMES-4213:
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Summary: ValidRcptHandler does not properly check aliases
Key: JAMES-4213
URL: https://issues.apache.org/jira/browse/JAMES-4213
Project: James Server
Issue Type: Bug
Components: SMTPServer
Reporter: Felix
Currently, it is only checked if the recipient is a user or if there is a
mapping with the recipient as source. It is not checked that this mapping
actually points to a local mailbox.
We do not want to accept emails that go directly to an error repository, so
this should be caught after the SMTP RCPT command.
I would be in favor to enforce that all targets it resolves to are valid but
that may break some poorly maintained groups, I guess.
The alternative is to to accept a recipient if it resolves to at least one
mailbox that is present.
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