[170399] in North American Network Operators' Group

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Re: IPv6 isn't SMTP

daemon@ATHENA.MIT.EDU (Owen DeLong)
Thu Mar 27 02:28:18 2014

From: Owen DeLong <owen@delong.com>
In-Reply-To: <5333970A.6070107@direcpath.com>
Date: Wed, 26 Mar 2014 23:26:44 -0700
To: Robert Drake <rdrake@direcpath.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org


On Mar 26, 2014, at 8:12 PM, Robert Drake <rdrake@direcpath.com> wrote:

>=20
> On 3/26/2014 10:16 PM, Franck Martin wrote:
>>=20
>> and user@2001:db8::1.25 with user@192.0.2.1:25. Who had the good idea =
to use : for IPv6 addresses while this is the separator for the port in =
IPv4? A few MTA are confused by it.
> At the network level the IPv6 address is just a big number.  No =
confusion there.  At the plaintext level the naked IPv6 address should =
be wrapped in square brackets.
>=20
> From:
> http://tools.ietf.org/html/rfc3986#section-3.2.2
>=20

Two errors, actually=85 As an RFC-821 address, it should be =
user@[IP]:port in both cases (user@[192.0.2.1]:25 and =
user@[2001:db8::1]:25).

Owen



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