On Fri, Nov 19, 2021 at 10:59 AM Evgeniy Berdnikov via Exim-users < [email protected]> wrote:
> On Thu, Nov 18, 2021 at 11:36:53PM +0300, Odhiambo Washington via > Exim-users wrote: > > On Thu, Nov 18, 2021 at 12:32 PM Evgeniy Berdnikov via Exim-users < > > [email protected]> wrote: > > > Yes, "References:" has 1018 octets while RFC limit is 998. > > > This is known bug for several Outlook versions. > > > > > > > Not sure how to mitigate this one. Maybe I should truncate/remove the > > > > header - and possibly break the thread? > > > > > > Better solution is to fold this header (split over multiple lines). > > > > How do I achieve that with exim-4.95? Config option?? > > There are several variants to try: > > 1. Use header add/remove directives in ACLs and/or routers to "reinstall" > problematic "References:" header if its length is too high, in hope > Exim would fold it correctly. > 2. Use transport filters (ch.24) on delivery stage. > 3. Route all incoming mails through external filter (such as Amavis), > it should reformat broken mails and re-inject them back. > > I use variations of N3 with custom scripts, those configuraions are > complex and they can't be reduced to a single config option. > > I have no experience with N1 and N2... Just try, it's interesting > are they working variants or not. > > As ultimate solution, you can check for length of "References:" header > and remove it if length is too long. This variant should always work. > Does the length check look at bytes or the number of characters? if ${length_1000:$h_References:} .... ?? -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft.", egrep -v '^$|^.*#' :-) -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
