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

[Tom Beecher <beecher () beecher cc>]

Your sarcasm detector might need a bit of a tweak. :)

On Fri, Jan 11, 2019 at 9:18 PM Viruthagiri Thirumavalavan <giri () dombox org>
wrote:

> 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 () herrin us> wrote:
>
> > On Fri, Jan 11, 2019 at 5:52 PM Viruthagiri Thirumavalavan
> > <giri () 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 () dirtside com  bill () herrin us
> > Dirtside Systems ......... Web: <http://www.dirtside.com/>
>
>
> --
> Best Regards,
>
> Viruthagiri Thirumavalavan
> Dombox, Inc.