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Add message token for bounces #3036

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Add message token for bounces #3036

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Commits on Jul 5, 2024

  1. Add message token to SMTP FROM 

    We add the per-message individual message token to the SMTP FROM,
which is mainly used in the return path (i.e. for bounce messages).
By adding the token to the mail address, we now are able to assign
incoming bounces not only by the x-postal-msgId header, but also
by their individual message tag / address.
    @schueffi
    schueffi committed Jul 5, 2024
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  2. assign bounces by their address tag, optional 

        Beside the search based on X-Postal-MsgID header, we also can assign incoming
    bounces by their individually generated mail address (with the same tag as
    in the X-Postal-MsgID). This is configurable, with the default disabled to
    have it backwards compatible.
    From a performance perspective, searching by this address based approach
    always is faster than scanning the full mail for the presence of the header,
    so we could also consider to make this feature enabled by default.
    @schueffi
    schueffi committed Jul 5, 2024
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