At 03:45 16-01-2009, Ian Eiloart wrote:
Now, what I'm suggesting (not advocating yet, because I'm not
certain that this is right), is that when there's no SPF record
published, that we should not feel too bad about bouncing email
because the domain administrator isn't taking adequate steps to
protect the domain against spam blowback, and against phishing. Of
course, I'm NOT suggesting that lack of an SPF record should score
very high in any any spamicity measure, but it might count for something.
What does SPF have to do with phishing?
I prefer to take adequate steps to prevent "invalid" bounces. It
helps me if the postmaster takes adequate steps for me to determine
what is valid. Some people do not use SPF due to its restrictions on
email usage.
Now, an SPF or DKIM match gives us the huge gain that we can bounce
messages selectively based on the content. Some recipients may not
want certain message content, but by the
DKIM-signed messages coming through this mailing list cannot be verified.
Regards,
-sm
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