Email Portability Approved by Knesset Committee

Steven Bellovin smb at
Mon Feb 22 20:10:07 UTC 2010

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,

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