Re: STARTTLS & EHLO: Errata text?

SM <sm@resistor.net> Tue, 03 February 2009 07:00 UTC

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Date: Mon, 02 Feb 2009 22:59:34 -0800
To: Hector Santos <hsantos@santronics.com>
From: SM <sm@resistor.net>
Subject: Re: STARTTLS & EHLO: Errata text?
Cc: ietf-smtp@imc.org
In-Reply-To: <4986FC2C.809@santronics.com>
References: <497DE492.4080506@pscs.co.uk> <497DED29.70402@att.com> <497ED420.30708@pscs.co.uk> <alpine.LSU.2.00.0901271403220.4546@hermes-2.csi.cam.ac.uk> <497F86CB.60904@att.com> <alpine.LSU.2.00.0901281434440.4546@hermes-2.csi.cam.ac.uk> <498088B8.9040404@pscs.co.uk> <alpine.LSU.2.00.0901291310080.4546@hermes-2.csi.cam.ac.uk> <4981C0D5.1010401@pscs.co.uk> <4981C6BD.2040900@att.com> <37F39FF37390694B69567838@PST.JCK.COM> <4981E1AB.9000002@att.com> <alpine.LSU.2.00.0901301832470.4795@hermes-2.csi.cam.ac.uk> <49835DE2.3030403@santronics.com> <alpine.LSU.2.00.0901312021190.14750@hermes-2.csi.cam.ac.uk> <4984C49C.5030401@santronics.com> <alpine.LSU.2.00.0902011706190.10756@hermes-2.csi.cam.ac.uk> <AE5689449BAC89829F0DD5E7@PST.JCK.COM> <4985FCD8.8040305@santronics.com> <6.2.5.6.2.20090201133008.02d2ec00@resistor.net> <4986FC2C.809@santronics.com>
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Hi Hector,
At 05:59 02-02-2009, Hector Santos wrote:
>How can you say that?  For that matter, why would less specific 
>information or even the proposed errata would provide change?

I was commenting on adding text to cover all the angles.  That can 
lead to "over-specification".  Instead of clarifying the text, it can 
become more convoluted.  It might also impose unneeded requirements.

For example, Tony Finch explained how an implementation provides for 
local policy checks by the administrator.  The result was a 550 code 
returned when EHLO is missing.  You described how an implementation 
can recover from the error condition if a 503 code is returned 
there.  Both of you have valid arguments about why the implementation 
is done in such a way.

Regards,
-sm