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

[William Herrin <bill () herrin us>]

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/>