[feedback-report] [Fwd: ARF feedback.]

[J.D. Falk]

Forwarding by request.

-------- Original Message --------
Subject: 	ARF feedback.
Date: 	Sat, 2 Jul 2005 14:41:08 -0700
From: 	Vipul Ved Prakash <vipul at cloudmark.com>
To: 	<jdfalk at yahoo-inc.com>



JD,

Somehow still can't get to ARF list, so I am sending feedback directly
to you. These points are based my experience with Razor/SpamNet that
supports submission of messages to us: 

"Message-Truncated" header

    There will be instance when the message to be reported is
    too big and the client is not willing to report the entire
    message. It could be argued that the recipient does not want
    to get multiple 5Mb reports for large spam/worm emails. A
    new header could be used to indicate that the message was
    truncated at a particular length. For instance, a reporting
    agent could be programmed with a max limit, say 64Kb and for
    messages that exceed 64Kb, it would add a header:

            Message-Truncated: 65535

    and truncate the message at 65535 bytes. This could be an
    optional header.

Formats other than RFC822

    I pointed this out in the BOF at INBOX, and I don't want to
    belabor this point, but I think it is important to support
    formats other than RFC822. Outlook, for instance, provides
    the message through MAPI in form of multiple "buckets". In
    many cases, a single MIME part is presented as multiple
    buckets (HTML version, text version, etc), and re-creation
    of original RFC822 is mostly impossible. I understand that
    Outlook support is not the primary focus at this stage, but
    there should be a provision in the spec to include outliers
    like Outlook. For Outlook this could be done through a MIME
    header like message/outlook, that comprises of multiple
    message/outlookbuckets.

    Other clients like Eudora and mail.app also modify the
    original message, but they retain the RFC822 format. For
    these the UserAgent hint is sufficient to indicate that the
    reported message is different from the original one.

Supressing Headers

    Razor and Cloudmark clients support an option to supress
    headers and only report the message. I think this is an
    important privacy option, since headers can contain internal
    routing information that might be considered private by some
    organizations. Header suppression could also be support by a
    MIME header like message/rfc822-noheaders.

Cheers,
Vipul





-- 
J.D. Falk, Anti-spam Product Manager, Yahoo! Mail
jdfalk at yahoo-inc.com

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