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Re: IETF Policy on dogfood consumption or avoidance - SMTP version

Viktor Dukhovni <ietf-dane@dukhovni.org> Sun, 15 December 2019 22:59 UTC

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Date: Sun, 15 Dec 2019 17:59:02 -0500
From: Viktor Dukhovni <ietf-dane@dukhovni.org>
To: ietf@ietf.org
Subject: Re: IETF Policy on dogfood consumption or avoidance - SMTP version
Message-ID: <20191215225902.GD11489@straasha.imrryr.org>
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On Sun, Dec 15, 2019 at 05:29:27PM -0500, John Levine wrote:

> $ telnet -4 mail.ietf.org 25
> Trying 4.31.198.44...
> Connected to mail.ietf.org.
> Escape character is '^]'.
> 220 ietfa.amsl.com ESMTP
> ehlo [64.57.183.53]
> 250-ietfa.amsl.com
> 250-PIPELINING
> 250-SIZE 67108864
> 250-ETRN
> 250-STARTTLS
> 250-AUTH PLAIN LOGIN
> 250-AUTH=PLAIN LOGIN
> 250-ENHANCEDSTATUSCODES
> 250 8BITMIME
> quit
> 221 2.0.0 Bye

Postfix delays HELO checks until RCPT TO.  You'd need to go all the way
to RCPT TO:

    $ telnet mail.ietf.org 25
    220 ietfa.amsl.com ESMTP
    EHLO [100.2.39.101]
    250-ietfa.amsl.com
    250-PIPELINING
    250-SIZE 67108864
    250-ETRN
    250-STARTTLS
    250-AUTH PLAIN LOGIN
    250-AUTH=PLAIN LOGIN
    250-ENHANCEDSTATUSCODES
    250 8BITMIME
    mail from:<ietf-dane@dukhovni.org>
    250 2.1.0 Ok
    rcpt to:<ietf@ietf.org>
    550 5.7.1 <[100.2.39.101]>: Helo command rejected: RFC2821 violation
    quit
    221 2.0.0 Bye
    Connection closed by foreign host.

-- 
    Viktor.

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