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Frank Ellermann wrote:
Julian Mehnle wrote:
I got word from an authoritative source within Google that they
generally do NOT reject on SPF Fail.
Hm... :-(
They reject for a few other reasons, such as the SMTP sender
being a dynamically allocated IP address (which seems to
be what Frank observed)
Kind of odd that they bother to receive the DATA when the sender
is a dynamic IP producing an SPF FAIL.
It seems you got me wrong (perhaps because I worded badly). If the
sending IP address is a dynamically allocated one, they still do reject,
even it's an SPF Fail. What I was trying to say is that an SPF Fail in
itself will never be the cause for a rejection by GMail.
SPF Fail contributes as a factor to their spam decision, though.
Let's hope that folks *forwarding* their mail to Gmail look into
their spam folder at least once.
I don't think they weight SPF Fails all too negatively. They rather use
SPF Pass for their internal reputation system:
"Sender Reputation in a Large Webmail Service"
http://www.ceas.cc/2006/19.pdf
Frank, can you please update your "Google" page on the SPF website?
Yeah, later, I'll replace my reject example by your evidence in
<http://permalink.gmane.org/gmane.mail.spam.spf.discuss/23733>.
I'd rather just say that "GMail does not reject on SPF Fail but uses it in
their spam decision". Something like that. Forget the evidence -- given
the facts, it's of little interest.
I think we can rename the page to "Google SPF implementation" or
"Google and SPF" or something. Where on the website do you want to
link it from?
No idea, just move it to an "ordinary" page, maybe below FAQ ?
"Moving it to an ordinary page" -- that's what I meant. OK, let's make it
a FAQ entry. "FAQ/Google and SPF"?
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