spf-discuss
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RE: [spf-discuss] Re: Election issue: forwarding problem

2007-02-03 19:36:28
On Mon, 29 Jan 2007, Stuart D. Gathman wrote:
On Mon, 29 Jan 2007, Michael Deutschmann wrote:
Backscatter is a big problem for forwarders.  TENBOX will make it go
away.  SRS makes it worse, because by relaying the DSNs, the forwarder
takes the reputation hit for the recipient's backscatter.

Not for domains that publish SPF -all, if they checked SPF before
accepting the mail on the way in.

But most domains don't publish SPF -all, or SPF at all, today.  Faced
with an ambivalent SPF result (NONE, NEUTRAL, or SOFTFAIL), a forwarder
can neither reasonably refuse such e-mail outright, nor assume that
bouncing the message will be safe.

---- Michael Deutschmann <michael(_at_)talamasca(_dot_)ocis(_dot_)net>

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