[exim-dev] [Bug 2846] New: Support SMTP 251 "corrected desti…

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Autor: admin
Data:  
A: exim-dev
Assumpte: [exim-dev] [Bug 2846] New: Support SMTP 251 "corrected destination" responses
https://bugs.exim.org/show_bug.cgi?id=2846

            Bug ID: 2846
           Summary: Support SMTP 251 "corrected destination" responses
           Product: Exim
           Version: 4.95
          Hardware: All
                OS: All
            Status: NEW
          Severity: wishlist
          Priority: low
         Component: Mail Receipt
          Assignee: unallocated@???
          Reporter: jgh146exb@???
                CC: exim-dev@???


251 User not local; will forward to <forward-path>


SMTP allows for a 2xx variant accepting a message, but advising the
sender that the recipient has moved on. The message would need to be forwarded
after acceptance.

Consider providing builtin support for responding with that. It should be
controllable so that info that should be retained as private is not passed out
unless permitted. We'd have to do an r-verify and discover a redirect.

Consider also the notification side on sending mail: on getting a 251 (vs. 250)
build a DSN for the sender with the new address for their recipient.
Possibly only if RFC 3461 DSN notification is not in use (also, check / add to
generation of such).


There is a 551 response defined in standards, also.

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