SMTP Over TLS on Port 26 - Implicit TLS Proposal [Feedback Request]

Sat Jan 12 02:14:40 UTC 2019

>
> While we're at it, let's deprecate IPv4 now that IPv6 is fully deployed

Come on Mr. Herrin.

Blocking a port is much easier than deprecating a heavily used protocol.
Google stats show ~75% use IPv4.

On Sat, Jan 12, 2019 at 7:30 AM William Herrin <bill at herrin.us> wrote:

> On Fri, Jan 11, 2019 at 5:52 PM Viruthagiri Thirumavalavan
> <giri at dombox.org> wrote:
> >> In addition, it bypasses all the security folks have built around the
> >> idea of blocking port 25 traffic from sources which should not be
> >> operating as mail servers. Let's not make the network less secure in
> >> the name of making it more so.
> >
> > I already addressed this issue in the "security considerations" section.
> >
> > "Port 26 will be a secure alternative for Port 25. So Internet Service
> Providers are adviced to take precautions to prevent email spam abuse. They
> are advised to block port 26, if necessary."
>
> While we're at it, let's deprecate IPv4 now that IPv6 is fully deployed.
>
> -Bill
>
>
>
> --
> William Herrin ................ herrin at dirtside.com  bill at herrin.us
> Dirtside Systems ......... Web: <http://www.dirtside.com/>
>

-- 
Best Regards,

Viruthagiri Thirumavalavan
Dombox, Inc.
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