Re: [dmarc-ietf] ARC questions

[Michael Thomas <[e-mail]>]

PS: you're adding X-Google-DKIM-Signature which nobody knows what its 
utility is to your bloat total for dramatic effect.

Mike

On 12/2/20 6:33 PM, John R Levine wrote:
> On Wed, 2 Dec 2020, Michael Thomas wrote:
>>> But why bother?  The IANA header field registry currently has 419 
>>> entries. Why is it a crisis if it increases to 422 rather than 420?
>>
>> It does a lot more than that:
>
> We've been through this all before and none of these are persuasive.  For
> example:
>
>> 3) It adds a lot more bloat to the headers
>
> The message you just sent arrived with 4600 bytes of header (see 
> below) and under 2K of text.  Copies that went through the dmarc 
> mailing list probably had at least another 1K of header.
>
> If header bloat were ever an issue, it hasn't been for decades.
>
> R's,
> John
> ---- snip ---
> Return-Path: <[e-mail]>
> X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on gal.iecc.com
> X-Spam-Level: X-Spam-Status: No, score=-1.5 required=4.4 
> tests=BAYES_00,DCC_REPUT_00_12,
>     DKIM_SIGNED,DKIM_VALID,NICE_REPLY_A,RDNS_NONE,SPF_HELO_NONE
>     autolearn=no autolearn_force=no version=3.4.4
> Delivered-To: [e-mail]
> Received: (qmail 70731 invoked by uid 1014); 2 Dec 2020 23:30:07 -0000
> Delivered-To: [e-mail]
> Received: (qmail 70729 invoked from network); 2 Dec 2020 23:30:07 -0000
> Authentication-Results: iecc.com; spf=pass 
> spf.mailfrom=[e-mail] spf.helo=mail-pl1-x62a.google.com 
> smtp.remote-ip="2607:f8b0:4864:20::62a"; dkim=pass 
> header.d=mtcc-com.20150623.gappssmtp.com header.s=20150623 
> header.a=rsa-sha256 header.b="vvoZ+Loe"
> Received: from mail-pl1-x62a.google.com ([IPV6:2607:f8b0:4864:20::62a])
>   by mail1.iecc.com ([IPV6:2001:470:1f07:1126:33:5370:616d:6d31])
>   with ESMTPS via TCP6 (port 38853/25) id 665297367
>   tls TLS1.3_ECDHE_RSA_AES_128_GCM_AEAD sni mx1.taugh.com; 02 Dec 2020 
> 23:30:06 -0000
> Received: by mail-pl1-x62a.google.com with SMTP id 4so91499plk.5
>         for <[e-mail]>; Wed, 02 Dec 2020 15:30:05 -0800 (PST)
> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
>         d=mtcc-com.20150623.gappssmtp.com; s=20150623;
>         h=subject:to:cc:references:from:message-id:date:user-agent
> :mime-version:in-reply-to:content-transfer-encoding:content-language;
>         bh=frJndGBg4PljdPRXFB1KqYuhqqDFqbuyeJjhznmBtNo=;
> b=vvoZ+Loew2ueICysZfzHi5UwJ3jXLN5dX+kyHN3HI91ZMJWMq7cym6dw1XQ9zaHvar
> KWobHhYgPlIURrzw5+sM1lArZM0+S8zElTI9oJicfts5VpsuYtc3kGzpFO58DlGQMzji
> +Bshah0JzXltImvCLjzUhHXHOLYvfA/Hk9lwY5XD904cTcBo4UfTKvenfFv3yLyBc4k3
> l61UDIWK7HRcdixAnDYx7zJLZaO3qcbPOwkG48uqCoMDIJVhcBndL82W/JflTPy4EB9S
> VydV+ABOODKddInyT2i5+/cTXS1B66NWYHF/Auh1UqRkxB/+H5T//oXYkKWqXolceqkS
>          Y3Nw==
> X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
>         d=1e100.net; s=20161025;
> h=x-gm-message-state:subject:to:cc:references:from:message-id:date
> :user-agent:mime-version:in-reply-to:content-transfer-encoding
>          :content-language;
>         bh=frJndGBg4PljdPRXFB1KqYuhqqDFqbuyeJjhznmBtNo=;
> b=EiCvgdUtIHSRQXtcFgoSdo/YgcWiu1mxFOdlQ/tDw8nd2ipjfcUBNlRSW9ygClV9vu
> TBZpT6xrU/F0xLA6fq9Tt51Z4S1VSgDSOCt1Ut8+oLzyBXkDCjQ3j8rByKqPkRvivOap
> 82rO+tMd5J/4SMAAPGmJ28WAq+E7J4EJknvVu1LUOEiTERnAbmT9ZK/eTEKPjQGx0msa
> GMCKzawKzSfLMvOIqaKoPUmxPyrtEnEUizEPer7/aXZ0pXrUTHQ82984GTYqSdKDoYIS
> T+59dBxbPY9KwT33oih+1slVUSLBEbzUigK3wj4yA/71KTvr76KCUEaU8cYI6/TYcszz
>          2CWA==
> X-Gm-Message-State: 
> AOAM530XUwEgBdQ2e02rPshm7iyXROuyhTJeAndRJAFtQO8oX1JUEgsD
>     chdQCnyR1XB3fAEw5oIqGysS4Q==
> X-Google-Smtp-Source: 
> ABdhPJzQUtiWyUp4dVxdii6hT+h4YBukyVaoJ5846n5Di6IUaEwxKrufF/3Atxm7lejww+dr4k5xIw==
> X-Received: by 2002:a17:90a:c4f:: with SMTP id 
> u15mr287214pje.177.1606951804840;
>         Wed, 02 Dec 2020 15:30:04 -0800 (PST)
> Return-Path: <[e-mail]>
> Received: from mike-mac.lan (107-182-42-33.volcanocom.com. 
> [107.182.42.33])
>         by smtp.gmail.com with ESMTPSA id 
> x7sm158495pfn.85.2020.12.02.15.30.03
>         (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128);
>         Wed, 02 Dec 2020 15:30:04 -0800 (PST)
> Subject: Re: [dmarc-ietf] ARC questions
> To: John R Levine <[e-mail]>, Brandon Long <[e-mail]>
> Cc: IETF DMARC WG <[e-mail]>
> References: <[e-mail]>
>  <[e-mail]>
>  <[e-mail]>
>  <[e-mail]>
>  <CABa8R6swzAQLPU=[e-mail]>
>  <[e-mail]>
>  <CABa8R6sEk+dHwHjBCKDgcmeT_Z3FymC5+jzy-GGa=[e-mail]>
>  <[e-mail]>
>  <[e-mail]>
>  <[e-mail]>
>  <[e-mail]>
>  <[e-mail]>
>  <[e-mail]>
> From: Michael Thomas <[e-mail]>
> Message-ID: <[e-mail]>
> Date: Wed, 2 Dec 2020 15:30:01 -0800
> User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0)
>  Gecko/20100101 Thunderbird/78.5.0
> MIME-Version: 1.0
> In-Reply-To: <[e-mail]>
> Content-Type: text/plain; charset=utf-8; format=flowed
> Content-Transfer-Encoding: 8bit
> Content-Language: en-US