Heiko Schlittermann via Exim-users <exim-users@exim.org> writes: > Heiko Schlittermann <h...@schlittermann.de> (Mo 17 Okt 2022 23:58:03 CEST): >> 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. > > To be more precise: The one I have is 1000 chars w/o the header field > name and w/o the line ending terminator. It then continues on the next > (indented) line, which is ok.
Are you asking how to disable the Exim rejection of these lines? If so, perhaps the snippet below from my configuration may help. Several sites triggers this problem today, and I'm not sure it is a reasonable default behaviour any more. Fortunately it is possible to disable. # https://blog.dhampir.no/content/exim4-line-length-in-debian-stretch-mail-delivery-failed-returning-message-to-sender # oneflow.com emails trigger the following: # 2022-02-28 12:16:31.812 [2285693] 1nOe11-009ac1-DL H=a3-3.smtp-out.eu-west-1.amazonses.com [54.240.3.3]:38433 I=[178.174.241.107]:25 X=TLS1.2:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_128_CBC__SHA1:128 CV=no SNI=uggla.sjd.se F=<0102017f400bcc94-9e0850cc-cd93-4e2b-adfe-c4058370ae10-000...@eu-west-1.amazonses.com> rejected after DATA: maximum allowed line length is 998 octets, got 4852 IGNORE_SMTP_LINE_LENGTH_LIMIT=t /Simon
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