Re: [Emailcore] Two extra issues

[John C Klensin <[e-mail]>]

--On Friday, December 18, 2020 17:47 +0000 Alexey Melnikov
<[e-mail]> wrote:

> On Fri, Dec 18, 2020, at 5:23 PM, Alessandro Vesely wrote:
>> On Fri 18/Dec/2020 02:24:26 +0100 John R Levine wrote:
>> > On Thu, 17 Dec 2020, Ned Freed wrote:
>> >> There's still quite a few HELO's being sent by IOT stuff
>> >> that supports email. And I can understand why - when every
>> >> byte counts, code to fall back from EHLO to HELO isn't
>> >> going to be written.
>> > 
>> > Is that SMTP or submission?  I think we will continue to
>> > tolerate a lot more  sloppiness in submission than in SMTP
>> > relay.
>> 
>> 
>> What is going to be gained by not tolerating HELO on port 25
>> any more?  The  server code is not going to shrink
>> considerably, especially if the same code  also supports port
>> 587.
>> 
>> Sometimes I use HELO for a quick test with telnet[*] if for
>> some reason I don't  want the terminal window to scroll by
>> the amount of lines that EHLO responses  imply.
> 
> [As a participant]
> 
> For reasons stated by Alessandro and Ned I have a weak
> preference to leave HELO as is in rfc5321bis.

(As a participant and for the same reasons)
 I share that preference

(And, as author)
 I recommend that the bar for making substantive changes, even
to drop things previously required or allowed, should be fairly
high.  My inclusion of that item was because I found it in my
notes from prior suggestions and comments; it was not a
recommendation for any particular action.

   john