Re: IPv6 address literals probably aren't SMTP either

["John Levine" <johnl () iecc com>]

In article <5333970A.6070107 () direcpath com> you write:
> On 3/26/2014 10:16 PM, Franck Martin wrote:
> > 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.
>
> From:
> http://tools.ietf.org/html/rfc3986#section-3.2.2

It's messier than that.  See RFC 5321 section 4.1.3.  I have no idea
whether anyone has actually implemented IPv6 address literals and if
so, how closely they followed the somewhat peculiar spec.

R's,
John