Re: potable e-mail, now Trying to do too much (was Re: the introduction problem, etc.)

[Michael Richardson <[e-mail]>]

John Levine <[e-mail]> wrote:
    > It appears that Michael Richardson <[e-mail]> said:
    >> Keith Moore <[e-mail]> wrote: > But even though it's
    >> slightly cumbersome and a bit too expensive, > anyone can get their
    >> own DNS name, point their MX records at a mail > service provider of
    >> their choice, and change those MX records and
    >>
    >> No, that's not a portable (phone) email address.  That's a new phone
    >> number.

    > Um, what?  I'm using the same e-mail in the same domain I registered in
    > 1993 wven though it's gone through a whole lot of different providers
    > in the past two decades.  Mail domains are extremely portable.

Right. Mail *domains* are extremely portable.
Now, explain to me how to move [e-mail] to yahoo or protonmail.com?
".forward" used to work, but DMARC policy makes this impossible now.

    > Technically it would not be hard to add a per-mailbox DNS lookup to
    > SMTP, ignoring the detail that no two mail systems agree what a mailbox
    > is.  (Are bobsmith and bob.smith the same mailbox? Are bob and

Yes, that's a further complexity.

--
Michael Richardson <[e-mail]>, Sandelman Software Works
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