Re: STARTTLS & EHLO: Errata text?
John C Klensin <john+smtp@jck.com> Sun, 01 February 2009 20:25 UTC
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Date: Sun, 01 Feb 2009 15:25:13 -0500
From: John C Klensin <john+smtp@jck.com>
To: Hector Santos <hsantos@santronics.com>
cc: Tony Finch <dot@dotat.at>, ietf-smtp@imc.org
Subject: Re: STARTTLS & EHLO: Errata text?
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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>
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--On Sunday, February 01, 2009 14:49 -0500 Hector Santos <hsantos@santronics.com> wrote: >... > Tony, SM, John, > > Ok, let me try it this way: > > I was thinking of 3207 with text similar to: > > The secured SMTP client MUST resend the EHLO command and > the > secured SMTP server MUST be prepared to issue an 503 > for any out of sequence commands by legacy 3207 clients. In spite of the fact that the 503 code has been stable since 821 was published, I'd be a lot happier with the above if it said "issue a 'command out of sequence' reply" or "issue a 'command out of sequence' reply as specified for SMTP [RFC5321]" than "issue a 503...". Just aesthetics about what is specified where. I don't have enough in-depth familiarity with 3207 clients to have a useful opinion about whether (1) that text is needed or whether (2) text that (i) recommended sending the second EHLO and (ii) indicated that any client that does not send the EHLO MUST be prepared for a "command out of sequence" code and MUST then either issue the EHLO forthwith or abandon the connection (following SMTP and TLS rules for doing that) Would be the more appropriate fix. >... john
- Re: STARTTLS & EHLO: Errata text? Hector Santos
- Re: STARTTLS & EHLO: Errata text? Tony Finch
- Re: STARTTLS & EHLO: Errata text? Hector Santos
- Re: STARTTLS & EHLO: Errata text? ned+ietf-smtp
- Re: STARTTLS & EHLO: Errata text? Tony Finch
- Re: STARTTLS & EHLO: Errata text? Tony Finch
- Re: STARTTLS & EHLO: Errata text? Tony Finch
- Re: STARTTLS & EHLO: Errata text? Russ Allbery
- Re: STARTTLS & EHLO: Errata text? ned+ietf-smtp
- Re: STARTTLS & EHLO: Errata text? SM
- Re: STARTTLS & EHLO: Errata text? Hector Santos
- Re: STARTTLS & EHLO: Errata text? John C Klensin
- Re: STARTTLS & EHLO: Errata text? Paul Smith
- Re: STARTTLS & EHLO: Errata text? Paul Smith
- Re: STARTTLS & EHLO Tony Hansen
- Re: STARTTLS & EHLO: Errata text? Russ Allbery
- Re: STARTTLS & EHLO: Errata text? Hector Santos
- Re: STARTTLS & EHLO: Errata text? ned+ietf-smtp
- Re: STARTTLS & EHLO: Errata text? John C Klensin
- Re: STARTTLS & EHLO: Errata text? Hector Santos
- Re: STARTTLS & EHLO: Errata text? ned+ietf-smtp
- Re: STARTTLS & EHLO: Errata text? Alexey Melnikov
- Re: STARTTLS & EHLO: Errata text? Alexey Melnikov
- Re: STARTTLS & EHLO: Errata text? SM
- Re: STARTTLS & EHLO: Errata text? ned+ietf-smtp
- Re: STARTTLS & EHLO: Errata text? Hector Santos
- Re: STARTTLS & EHLO: Errata text? Bill McQuillan
- Re: STARTTLS & EHLO: Errata text? John C Klensin
- Re: STARTTLS & EHLO: Errata text? SM
- Re: STARTTLS & EHLO: Errata text? Alexey Melnikov
- Re: STARTTLS & EHLO: Errata text? Tony Hansen
- Re: STARTTLS & EHLO John C Klensin
- Re: STARTTLS & EHLO Tony Hansen
- Re: STARTTLS & EHLO Paul Smith
- Re: STARTTLS & EHLO Tony Finch
- Re: STARTTLS & EHLO Hector Santos
- Re: STARTTLS & EHLO SM
- Re: STARTTLS & EHLO John C Klensin
- Re: STARTTLS & EHLO Tony Hansen
- Re: STARTTLS & EHLO Peter Bowyer
- Re: STARTTLS & EHLO Hector Santos
- Re: STARTTLS & EHLO Paul Smith
- Re: STARTTLS & EHLO Tony Finch
- Re: STARTTLS & EHLO Paul Smith
- Re: STARTTLS & EHLO John C Klensin
- Re: STARTTLS & EHLO Tony Hansen
- Re: STARTTLS & EHLO Tony Finch
- Re: STARTTLS & EHLO Alessandro Vesely
- Re: STARTTLS & EHLO Paul Smith
- Re: STARTTLS & EHLO Alexey Melnikov
- Re: STARTTLS & EHLO Tony Finch
- Re: STARTTLS & EHLO John C Klensin
- Re: STARTTLS & EHLO Tony Hansen
- STARTTLS & EHLO Paul Smith
- Re: STARTTLS & EHLO: Errata text? SM
- Re: STARTTLS & EHLO: Errata text? Hector Santos
- Re: STARTTLS & EHLO: Errata text? SM
- Re: STARTTLS & EHLO: Errata text? Hector Santos
- Re: STARTTLS & EHLO: Errata text? John C Klensin
- Re: STARTTLS & EHLO: Errata text? Tony Finch
- RFC 1123bis? Hector Santos
- Re: STARTTLS & EHLO: Errata text? John C Klensin
- Re: STARTTLS & EHLO: Errata text? Hector Santos
- Re: STARTTLS & EHLO: Errata text? John C Klensin
- Re: STARTTLS & EHLO: Errata text? Tony Finch
- Re: STARTTLS & EHLO: Errata text? SM