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Mon, 25 Sep 2023 04:33:42 -0700 (PDT) Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.700.6\)) Subject: Re: Fixed Message-ID trouble From: Daniel Corbe In-Reply-To: <871qemsewr.fsf@iki.fi> Date: Mon, 25 Sep 2023 07:33:23 -0400 Message-Id: <9F44B9F8-E2DB-4B01-8196-2AA48036A992@corbe.net> References: <874jjiskeo.fsf@iki.fi> <871qemsewr.fsf@iki.fi> To: Teemu Likonen X-Mailer: Apple Mail (2.3731.700.6) Message-ID-Hash: 2HPT5INMS7KRTOS6VM7WTKJEK3YIJXZE X-Message-ID-Hash: 2HPT5INMS7KRTOS6VM7WTKJEK3YIJXZE X-MailFrom: daniel@corbe.net X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-notmuch.notmuchmail.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: notmuch@notmuchmail.org X-Mailman-Version: 3.3.3 Precedence: list List-Id: "Use and development of the notmuch mail system." List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: multipart/mixed; boundary="===============4235654916938240390==" X-Migadu-Country: DE X-Migadu-Flow: FLOW_IN X-Spam-Score: 6.12 X-Migadu-Spam-Score: 6.12 X-Migadu-Scanner: mx1.migadu.com X-Migadu-Queue-Id: 29FA55EDC9 X-TUID: MyFLZ/3y9Orj --===============4235654916938240390== Content-Type: multipart/signed; boundary="Apple-Mail=_19C98139-3374-4E8E-8293-133A6DABDE36"; protocol="application/pgp-signature"; micalg=pgp-sha256 --Apple-Mail=_19C98139-3374-4E8E-8293-133A6DABDE36 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On Sep 25, 2023, at 06:52, Teemu Likonen wrote: >=20 >> Some person on debian-user mailing list seems to be sending messages >> with fixed Message-ID field: the same ID in different messages. In >> Notmuch it is creating trouble because it connects unrelated threads = to >> one. The person has different messages in different threads but = Notmuch >> thinks they are the same message because the Message-ID is the same. >>=20 >> This is potentially a "denial of service" for Notmuch. Well, not = quite, >> but is harmful nonetheless. How would a Notmuch user fix the mess or >> protect himself against it? >=20 > I am no longer sure if this issue is caused by fixed "Message-ID" or > wrong "References" or "In-Reply-To" values. Anyway, someone has = created > real mess anyway because Notmuch combines originally separate threads > now and forever. Silly question, I know, but have you actually tried reaching out to the = user? No MUA that I=E2=80=99m aware of acts like this and it=E2=80=99s = pretty clear from documentation and standards tracks that Message-ID is = meant to be globally unique per message. If the user is knowledgeable enough to have a boutique mail reader, = they=E2=80=99re probably also knowledgeable enough to correct the defect = too. --Apple-Mail=_19C98139-3374-4E8E-8293-133A6DABDE36 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEt+inIxLpZwXoZBS5jpa2mjDBmTsFAmURcAMACgkQjpa2mjDB mTugXxAAoYJJJBVnA4JMliyE2MHxUaHNilbF3auYJkRf2Rt8Y7WAEx3S6afMa97X Scra2l2+a3IO8OT8BRMpdomc1lDZ5CEg2FdWdg2GmZ9MQbDZlgDnp7995+AE5O6M +CaX8wCcE/WUrC8UB+uZkEy3PFYdYwiP3GEe/7A/3JmPH+fsKkF14/NhEEfEEQTr BkJiBldtRd+o33yvABxzu2KrJLdALSWWjsuOLJNH4DUxtpR+X17f/4E7gpgRN4jR LPmiJwtsearevTc6WlkzETX1gQbkh+U06i3GRp1902Eu8hjZLIQFYcvgd6HD6IYl sfxLpxSKv2ym0dhH//jbcoB4EFeBsIdGPeaNp/r0IQdPrbrvMbcNn22ZriS/8cxq e/iEXuYrRUCQDZFSaARaYMmI2gKFFJ5pAA13M/XUNLHsPHmAlh2VDwSPQezQh9bF e1fL4FxCK6CmkiG77lO45EIxkzbyCf5TduxSERNVqYGnXqWgpUoflJhWWa54HQ52 NnyM/GZtzkvLoNbBqXy+Xfs5jsGXhQwkunIlA7KBgukQVnp+n97V3ejgYRacfV+X r94E2DlxivmrdMmJl0pifiutR2k7vb0welBGUWQn7TdmjOMzhBA0uHRaqFUGzsyR 2lDttdv9roHY29f0UoKPGUS3qqNRtbf5ZssBA9wCccRMX5mh/wY= =mpNd -----END PGP SIGNATURE----- --Apple-Mail=_19C98139-3374-4E8E-8293-133A6DABDE36-- --===============4235654916938240390== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline --===============4235654916938240390==--