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Groups > alt.comp.software.thunderbird > #138
| From | Jeff Layman <jmlayman@invalid.invalid> |
|---|---|
| Newsgroups | alt.comp.software.thunderbird |
| Subject | Re: What or who decides if an "In-Reply-To:" header appears? |
| Date | 2021-04-15 21:07 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <s5a6da$cm6$1@dont-email.me> (permalink) |
| References | <s59mbo$c2k$1@dont-email.me> <s59qf9$d47$1@dont-email.me> |
On 15/04/2021 17:43, Dave Royal wrote: > Jeff Layman <jmlayman@invalid.invalid> wrote: >> Looking through the headers of various posts here and other NGs, I >> noticed that some of them have an "In-Reply-To:" header, while others >> don't. It doesn't appear to be user-agent related, so what decides if it >> appears or not? >> > In-Reply-To is defined in RFC2076 > <https://tools.ietf.org/html/rfc2076> > > It's not necessary in usenet, the headers of which are in RFC1036 > <https://tools.ietf.org/html/rfc1036> > > (Those RFCs may be superseded, but I doubt if those headers have > changed.) > > That defines the References header which should be used to thread > messages - though some may use In-Reply-To if they don't have the > message referred to in References. (Or they may use the subject.) > > I would have thought that whether there was an In-Reply_to or not > (apart from an OP) /would/ depend on the user-agent. Maybe it's an > option in some UAs. I've just looked through quite a few separate threads in different newsgroups. As far as I can tell it *is* user-agent related. An In-Reply-To header is found with Thunderbird, SeaMonkey, and Windows Live Mail, but not with anything else. > ISTR that *theoretically* a message can be in-reply-to more than one > messsage, but I've never seen that. > > Have you seen an In-Reply-To which is different from the last > message-ID in References? No -- Jeff
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What or who decides if an "In-Reply-To:" header appears? Jeff Layman <jmlayman@invalid.invalid> - 2021-04-15 16:33 +0100
Re: What or who decides if an "In-Reply-To:" header appears? WaltS48 <schw01@invalid.net> - 2021-04-15 11:38 -0400
Re: What or who decides if an "In-Reply-To:" header appears? Dave Royal<dave@dave123royal.com> - 2021-04-15 16:43 +0000
Re: What or who decides if an "In-Reply-To:" header appears? "Adam H. Kerman" <ahk@chinet.com> - 2021-04-15 17:35 +0000
Re: What or who decides if an "In-Reply-To:" header appears? Nomen Nescio <nobody@dizum.com> - 2021-04-16 19:29 -0500
Re: What or who decides if an "In-Reply-To:" header appears? Jeff Layman <jmlayman@invalid.invalid> - 2021-04-15 21:07 +0100
Re: What or who decides if an "In-Reply-To:" header appears? Dave Royal<dave@dave123royal.com> - 2021-04-15 21:25 +0000
Re: What or who decides if an "In-Reply-To:" header appears? Jeff Layman <jmlayman@invalid.invalid> - 2021-04-16 13:28 +0100
Re: What or who decides if an "In-Reply-To:" header appears? Nomen Nescio <nobody@dizum.com> - 2021-04-16 13:00 +0000
Re: What or who decides if an "In-Reply-To:" header appears? Nomen Nescio <nobody@dizum.com> - 2021-04-16 13:23 +0000
Re: What or who decides if an "In-Reply-To:" header appears? Jeff Layman <jmlayman@invalid.invalid> - 2021-04-16 20:57 +0100
Re: What or who decides if an "In-Reply-To:" header appears? Nomen Nescio <nobody@dizum.com> - 2021-04-16 22:20 +0000
Re: What or who decides if an "In-Reply-To:" header appears? Dave Royal <dave@dave123royal.com> - 2021-04-16 14:01 +0100
Re: What or who decides if an "In-Reply-To:" header appears? Nomen Nescio <nobody@dizum.com> - 2021-04-16 22:40 +0000
Re: What or who decides if an "In-Reply-To:" header appears? Dave Royal<dave@dave123royal.com> - 2021-04-18 06:34 +0000
Re: What or who decides if an "In-Reply-To:" header appears? Nomen Nescio <nobody@dizum.com> - 2021-04-18 10:30 +0000
Re: What or who decides if an "In-Reply-To:" header appears? "Adam H. Kerman" <ahk@chinet.com> - 2021-04-18 13:55 +0000
Re: What or who decides if an "In-Reply-To:" header appears? PietB <www.godfatherof.nl/@opt-in.invalid> - 2021-04-17 10:56 +0200
Re: What or who decides if an "In-Reply-To:" header appears? "Adam H. Kerman" <ahk@chinet.com> - 2021-04-17 15:01 +0000
Re: What or who decides if an "In-Reply-To:" header appears? Ken Blake <ken@invalidemail.com> - 2021-04-17 08:07 -0700
Re: What or who decides if an "In-Reply-To:" header appears? "Adam H. Kerman" <ahk@chinet.com> - 2021-04-17 15:16 +0000
Re: What or who decides if an "In-Reply-To:" header appears? Ken Blake <ken@invalidemail.com> - 2021-04-17 08:02 -0700
Re: What or who decides if an "In-Reply-To:" header appears? "Adam H. Kerman" <ahk@chinet.com> - 2021-04-17 15:07 +0000
Re: What or who decides if an "In-Reply-To:" header appears? Ken Blake <ken@invalidemail.com> - 2021-04-17 08:09 -0700
Re: What or who decides if an "In-Reply-To:" header appears? MikeS <MikeS@fred.com> - 2021-04-17 19:26 +0100
Re: What or who decides if an "In-Reply-To:" header appears? Ken Blake <ken@invalidemail.com> - 2021-04-17 14:40 -0700
Re: What or who decides if an "In-Reply-To:" header appears? Brian Gregory <void-invalid-dead-dontuse@email.invalid> - 2021-04-18 02:26 +0100
Re: What or who decides if an "In-Reply-To:" header appears? Andy Burns <usenet@andyburns.uk> - 2021-04-18 07:49 +0100
Re: What or who decides if an "In-Reply-To:" header appears? Brian Gregory <void-invalid-dead-dontuse@email.invalid> - 2021-04-20 03:14 +0100
Re: What or who decides if an "In-Reply-To:" header appears? Andy Burns <usenet@andyburns.uk> - 2021-04-20 07:34 +0100
Re: What or who decides if an "In-Reply-To:" header appears? Ken Blake <ken@invalidemail.com> - 2021-04-20 08:17 -0700
Re: What or who decides if an "In-Reply-To:" header appears? Ken Blake <ken@invalidemail.com> - 2021-04-18 10:30 -0700
Re: What or who decides if an "In-Reply-To:" header appears? Nomen Nescio <nobody@dizum.com> - 2021-04-19 01:24 +0000
Re: What or who decides if an "In-Reply-To:" header appears? WaltS48 <schw01@invalid.net> - 2021-04-19 07:30 -0400
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