spf-discuss
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Re: Handling of -all

2005-02-12 13:07:23
Scott Kitterman wrote:
Are you implying that B should deliver undeliverable mail to
a local spam folder ?


No.  I'm saying that if the mail can't be rejected due to SPF during the
SMTP session, then it shouldn't be bounced.  It should be delivered.

Great conversation guys, you're hitting a lot of nails right on the head  :)

A is the real sender at home, B is the dial up ISP, C checks SPF
and rejects, D is the victim because B bounces the message.

A--->B--x-->C

B--->D


However, in this example, whether mail rejected @ C can be rejected @ B, or will be bounced to D depends on whether the ISP B implemenent "interractive" delivery of submitted mail or "deferred/queued" delivery.

After a few complaints to the ISP B from parties like D, the ISP may well opt to enable interactive delivery, which will eliminate the need to bounce to D. For small ISPs, interactive delivery may be a viable option.

Regards,
Radu


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