On Sat, Oct 22, 2022 at 02:35:28PM +0100, Jeremy Harris via Exim-users wrote:
> On 17/10/2022 22:58, Heiko Schlittermann via Exim-users wrote:
> > how do you deal whith incoming messages having a Thread-Index header (an
> > other header indicates that the originating MUA was MS Outlook 16.0)
> > with about 1200 chars.
>
> As a longterm goal in handling this and the References: header,
> which can similarly grow, how about a bug just to document the
> issue and relevant info such as the syntaxes of these headers?
>
> There could be one already; I recall a discussion somewhere about
> what to do with References: but not where it was.
Discussed several times, in particular,
https://lists.exim.org/lurker/thread/20190416.032757.fefb1cbb.en.html#i20190416.032757.fefb1cbb
> A useful
> suggestion was of a Usenet practice of retaining the first element
> and the last couple, on the assumption that later ones are appended
> as the list grows.
In my practice there were many examples where Outlook 10+ generates
binary garbage inside References: header. I suspect these incidents
reflect memory corruptions (due to bugs in some Outlook versions),
rather then problems in logical formatting. I can't recall similar
corruptins with Thread-Index, but it's better to check for them.
--
Eugene Berdnikov
