From nobody Mon Apr 15 00:11:07 2024 X-Original-To: freebsd-stable@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4VHndj5N6qz5HM8k for ; Mon, 15 Apr 2024 00:11:21 +0000 (UTC) (envelope-from bakul@iitbombay.org) Received: from mail-yw1-x1134.google.com (mail-yw1-x1134.google.com [IPv6:2607:f8b0:4864:20::1134]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4VHndj2pZTz46qY for ; Mon, 15 Apr 2024 00:11:21 +0000 (UTC) (envelope-from bakul@iitbombay.org) Authentication-Results: mx1.freebsd.org; none Received: by mail-yw1-x1134.google.com with SMTP id 00721157ae682-61acfd3fd3fso3938737b3.1 for ; Sun, 14 Apr 2024 17:11:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=iitbombay-org.20230601.gappssmtp.com; s=20230601; t=1713139880; x=1713744680; darn=freebsd.org; h=to:references:message-id:content-transfer-encoding:cc:date :in-reply-to:from:subject:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=yGV3vfwdcZsRbNBWdLa9IXLhBoz/DID/xRf1tMZ48+Y=; b=JOSn29Vz4fVmO9vKNKG7L1UUqrFM2j63Tnm+X+UqMZRqihrtyFycsHRU4XoG/rRUAc 7a5J+8AUy5IlXSoo9hAz6iK/+zvbMH2waVIjm9SFyCreOXeKPnvSf86r+fUcVWoTgJwA JM5FPNuSHiFi1MRiZ/GwzNsuq2GAhpni+xmI4PhKJ/Up8LpOnGbxronBge4TnQYJAKEn JXPcOEhLH52MUgT7Dhdgq0aDS410U9GLv/6/nzEAfMxguRj03cLeSOJ8xtmjcEGXUGCW JRQ0jtcH1x+twmOeJwwviETYRaEoQtUmx9lm6Nx0Avu6UogQiuWin8cDuuCmt2WgmScB wpWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713139880; x=1713744680; h=to:references:message-id:content-transfer-encoding:cc:date :in-reply-to:from:subject:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=yGV3vfwdcZsRbNBWdLa9IXLhBoz/DID/xRf1tMZ48+Y=; b=Ni2xokkgJmxg1es0arYizSMaJ/yLCkG8SdiQGE7DU0S5KE5WrjA7z2XvNUdg1p1ltE Pa+WdqEeeDfwyfhEyaH3fCPGVmw19DQkbjh7JVpW40uBttAMX19KBDymtvVdPC9FZsWl B4a9spFV2zjfdh/1iMhk6WijCJgv1FlJy0KmWKmVrRJvpfwTVzV/VCv1myxb3qv83SpZ agDhu7VVfr7b/2/Pc2uFDzwTeFgoOr3Vz9geyJbQ17AsEn0731ZUNhv+jdkKZD/NeWbK rKUGS/7oPZtIrLAoz4X6EO5WcKaLC9nEnB353C49UHvS79OKw+fwPA9zndPBQMoOoNbu aY9g== X-Gm-Message-State: AOJu0YyYAxw+XJpMPNHA9qv0BMsSZc8sDBHIk8ycn37uLJGjjTMDHOvt HMqPeZinDIG9MO4P1PNc6M5+THhvGWBbGwWGV8EcM3/CCwdjnSIMsCXr4pEeL61MBKbv7lmybO8 = X-Google-Smtp-Source: AGHT+IErZuPI9Jqqn9kgRCg0X+evPXFUdusAC0gkdnLK4p+Oxz5d5eUCG0rasSz43DP3PCMFueIguQ== X-Received: by 2002:a81:7189:0:b0:60a:6ad0:6c72 with SMTP id m131-20020a817189000000b0060a6ad06c72mr8034401ywc.36.1713139879818; Sun, 14 Apr 2024 17:11:19 -0700 (PDT) Received: from smtpclient.apple (107-215-223-229.lightspeed.sntcca.sbcglobal.net. [107.215.223.229]) by smtp.gmail.com with ESMTPSA id f63-20020a81a842000000b006187ad29fe8sm1409316ywh.61.2024.04.14.17.11.18 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 14 Apr 2024 17:11:19 -0700 (PDT) Content-Type: text/plain; charset=utf-8 List-Id: Production branch of FreeBSD source code List-Archive: https://lists.freebsd.org/archives/freebsd-stable List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-stable@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3774.500.171.1.1\)) Subject: Re: What's happening to Sender: headers? From: Bakul Shah In-Reply-To: Date: Sun, 14 Apr 2024 17:11:07 -0700 Cc: freebsd-stable@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: <7338D9DD-E075-4382-9769-8188FDC639EB@iitbombay.org> References: To: Andrew Reilly X-Mailer: Apple Mail (2.3774.500.171.1.1) X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US] X-Rspamd-Queue-Id: 4VHndj2pZTz46qY > On Apr 14, 2024, at 3:33=E2=80=AFPM, Andrew Reilly = wrote: >=20 >=20 > Over the weekend I got around to investigating, and discovered that = the errant messages don=E2=80=99t _have_ a Sender: header. There=E2=80=99= s a Return-Path: header that captures the envelope-from, but I haven=E2=80= =99t figured out how to make sieve check that yet: it doesn=E2=80=99t = seem to like it. Sieve documentation is spectacularly inconclusive, but = I suspect that the envelope extension might do what I want, but that=E2=80= =99s not really my question. >=20 > Does anyone know why the Sender: header, which used to be so reliable = that I had thought it an intrinsic part of the SMTP/MTA ecosystem, has = gone away, or is at least not ubiquitous? The Sender: field is optional. I don't know why FreeBSD stopped using it = but I filter on List-Id: (which is used by pretty much every mailing = list), which seems more appropriate.=