[146462] in cryptography@c2.net mail archive
Re: [Cryptography] IPv6 and IPSEC
daemon@ATHENA.MIT.EDU (Moritz)
Thu Aug 29 15:21:01 2013
X-Original-To: cryptography@metzdowd.com
Date: Thu, 29 Aug 2013 11:07:43 +0200
From: Moritz <moritz@headstrong.de>
To: cryptography@metzdowd.com
In-Reply-To: <20130828190805.GB5171@cypherpunks.to>
Errors-To: cryptography-bounces+crypto.discuss=bloom-picayune.mit.edu@metzdowd.com
> Since forward and reverse DNS will rarely match for IP addresses used by individuals
> rather than service providers, this change precludes home users of
> IPv6 from sending email to Gmail acccount.
> Note that this new restriction imposed by Gmail only applies to IPv6 addresses, not
> IPv4 addresses.
For many years now, most mail servers have been rejecting mails sent
from "dynamic IPs". And for IPv6 specifically, long before Gmail, a lot
of ISPs already required forward and reverse DNS to match.
--Mo
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