On 7/1/2020 7:51 PM, John Levine wrote:
In article <[email protected]> you write:
-=-=-=-=-=-
DMARC either introduced or popularized the concept of filtering on the Message
From. Low-end gateways
that lack DMARC support will typically do nothing with the Message From -- the
header value does not
appear in the message logs and it cannot be used for filtering because it is
not examined.
##, #######. Spam filters like spamassassin have looked at the headers
along with everything else in the message forever.
SA is a tool that reads the entire RS232 payload.
I believe the OP was describing situations where the parameters for a
DKIM assessor like DMARC may not always be provided in a log file or
something that can process by their own tools. It would be akin to
lacking certain data bits in the AUTH-RES header for an assessor only
looking for the header.
Accumulating these for some current or future evaluator to can explore
is useful. In fact, the OP actually gave me an idea to do more in the
area, for example, log the SMTP/DKIM Identities, in a CSV file:
{timestamp},{smtp.ip},{smtp.ehlo},{smtp.mail},{smtp.to},{mail.from},{dkim.signer},{mail.sender},{list.id},
{reply.code}
That would be something that can imported into a SQL table or a
spreadsheet. But for something the sysop or 3rd party developer may
be already reading, adding the identities not already logged to a
process session log file, i.e. wcSMTP-{date}.log could be useful to
them. In this case, the OP is highlighting his system is not logging
the 5322.From in the log file. Not a protocol item, maybe an
implementation suggestion side note item.
All this would be something SA is not compatible with.
Given that the basis of your argument isn't true, I don't see any need
to go point by point through the rest of it.
This is about synergism, like the above. A comment you may not agree
with can be something that sparks something else. Most folks, if not
all, cherry pick comments to follow up on so I would appreciate it if
WG participation is not stifled with such rude comments. I would hope
and expect the WG chairs and AD would be addressing this.
Have a safe holiday weekend.
--
Hector Santos,
https://secure.santronics.com
https://twitter.com/hectorsantos
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