[jira] [Created] (JAMES-4144) MX matchers

Benoit Tellier created JAMES-4144:
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             Summary: MX matchers
                 Key: JAMES-4144
                 URL: https://issues.apache.org/jira/browse/JAMES-4144
             Project: James Server
          Issue Type: Improvement
          Components: Mailet Contributions
            Reporter: Benoit Tellier
             Fix For: 3.9.0


h3. Why

Provide tools to inspect MX records of email address domains for both sender and receivers.

This is for instance useful when registering dynamically a public email service and ensure correct configuration of the domain upon sending receival and mitigate some identity spoofing attempts on a publicly accessible platform allowing dynamic domain registration.

h3. How

Use DNSService to validate this against a supplied list of records.



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