[170432] in North American Network Operators' Group
Re: IPv6 isn't SMTP
daemon@ATHENA.MIT.EDU (Enno Rey)
Thu Mar 27 10:40:36 2014
Date: Thu, 27 Mar 2014 15:04:41 +0100
From: Enno Rey <erey@ernw.de>
To: nanog@nanog.org
In-Reply-To: <alpine.LSU.2.00.1403271340460.31260@hermes-1.csi.cam.ac.uk>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Hi,
On Thu, Mar 27, 2014 at 01:52:27PM +0000, Tony Finch wrote:
> John Levine <johnl@iecc.com> wrote:
> >
> > There are also some odd things in the spec. For example, according to
> > RFC 5321 this is not a syntactically valid e-mail address:
> >
> > mailbox@[IPv6:2001:12:34:56::78:ab:cd]
>
> You aren't allowed to use :: to abbreviate one zero hexadectet according
> to RFC 5952.
well, RFC 5952 _recommends_ against using that. Still, it's perfectly valid as of RFC 4291 and the approach can be found in quite large vendors' implementations, see http://labs.apnic.net/blabs/?p=309.
RFC 5952 explicitly states:
"all implementations must accept and be able to
handle any legitimate RFC 4291 format."
best
Enno
>
> http://www.rfc-editor.org/errata_search.php?eid=2467
>
> Tony.
> --
> f.anthony.n.finch <dot@dotat.at> http://dotat.at/
> Malin: East 5 or 6. Moderate or rough, occasionally very rough in northwest.
> Showers. Good, occasionally moderate.
>
--
Enno Rey
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