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Re: [ietf-smtp] Endless debate on IP literals

"John R Levine" <johnl@taugh.com> Fri, 03 January 2020 15:12 UTC

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Date: Fri, 03 Jan 2020 10:12:54 -0500
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From: John R Levine <johnl@taugh.com>
To: Keith Moore <moore@network-heretics.com>
Cc: ietf-smtp@ietf.org
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Subject: Re: [ietf-smtp] Endless debate on IP literals
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> And I expect what that means is that a mail relayer can’t tell by the 
> port used whether to act as an MSA or an MTA.

Huh?  Mail servers have been doing relay and submission on the same port 
for decades.  This is not an obscure situation or an unsolved problem.

Regards,
John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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