Philip Miller <millenix(_at_)zemos(_dot_)net> wrote:
Send-only mail servers MUST also be registered in the MX records,
and they should be given the lowest possible MX priority (65535).
I don't think this is a new idea; I remember a similar proposal by DJB some
time back, although I can't find it now.
I believe it's been discussed multiple times on this list, and
generally rejected, for the reasons you cited.
Alan DeKok.
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