Re: Email Portability Approved by Knesset Committee

[Steven Bellovin <smb () cs columbia edu>]

On Feb 22, 2010, at 1:58 PM, Florian Weimer wrote:

> * Steven Bellovin:
>
> > Right; I was not seriously suggesting that the DNS was the right
> > spot for it.  I am seriously suggesting that a redirect mechanism --
> > perhaps the email equivalent of HTPP's 301/302 -- would be worth
> > considering.  Then, of course, there's problem of upgrading the
> > $\aleph_0$ mail senders out there to comply...
>
> There's already SMTP support for this, see RFC 5321, section 3.4.
> This has been carried over from RFC 821, which already contain the
> 251/551 response codes.

Thanks; I'd forgotten about those.
> However, this is still a public database for which you cannot charge
> access, so it's not the solution we're looking for.


                --Steve Bellovin, http://www.cs.columbia.edu/~smb