Re: Sendmail white paper, SRS, and forwarding
2004-11-21 13:09:46
David Woodhouse wrote:
On Sun, 2004-11-21 at 20:30 +0100, Roger Moser wrote:
I don't understand why this mail would be rejected. Unless it's just
rejected due to the normal brokenness of SPF when mail is forwarded?
forwarder1.com sends it to forwarder2.com saying
MAIL
FROM:<SRS0=HHH=TT=forwarder1(_dot_)com=XXXXXXX=name(_at_)forwarder1(_dot_)com>
i.e. MAIL FROM:<anything(_at_)f1(_dot_)com>
forwarder2.com sends it to final.com saying
MAIL
FROM:<SRS0=HHH=TT=forwarder1(_dot_)com=XXXXXXX=name(_at_)forwarder1(_dot_)com>
i.e. MAIL FROM:<anything(_at_)f1(_dot_)com>
final.com checks SPF and gets the result "Fail". Since the return-path is
not signed, it rejects the mail.
Right. Just a normal example of the brokenness of SPF. This isn't really
related to SES at all. If f1.com was stupid enough to publish an SPF '-
all' record AND final.com is stupid enough to obey it, valid mail gets
lost. This is nothing new.
Unless the domain owner is exercising his or her right the use of the
domain in this way. In which case SPF is not broken at all... it's doing
exactly what the domain owner intends.
--
csm(_at_)moongroup(_dot_)com, head geek
http://moongroup.com
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- Re: Sendmail white paper, SRS, and forwarding, Meng Weng Wong
- Re: Sendmail white paper, SRS, and forwarding, David Woodhouse
- Re: Sendmail white paper, SRS, and forwarding, Roger Moser
- Re: Sendmail white paper, SRS, and forwarding, David Woodhouse
- Re: Sendmail white paper, SRS, and forwarding,
Chuck Mead <=
- Re: Sendmail white paper, SRS, and forwarding, Chuck Mead
- Re: Sendmail white paper, SRS, and forwarding, David Woodhouse
- Re: Sendmail white paper, SRS, and forwarding, Chuck Mead
- Re: Sendmail white paper, SRS, and forwarding, David Woodhouse
- Re: Sendmail white paper, SRS, and forwarding, Chuck Mead
- Re: Sendmail white paper, SRS, and forwarding, David Woodhouse
- RE: Sendmail white paper, SRS, and forwarding, Bruce Barnes
- Re: Sendmail white paper, SRS, and forwarding, Frank Ellermann
- Re: Sendmail white paper, SRS, and forwarding, Jeff Macdonald
- Re: Sendmail white paper, SRS, and forwarding, David Woodhouse
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