I ran across an interesting SPF record yesterday in the course of helping
someone who had written in to the spf.pobox.com site. The record had:
include:spf.trusted-forwarder.org
The trusted-forwarder.org SPF record is:
spf.trusted-forwarder.org text "v=spf1 exists:%{ir}.wl.trusted-forwarder.org
exists:%{p}.wl.trusted-forwarder.org"
It looks like a decent way to add the trusted forwarders to your sender
policy. Now I might be more inclinded to add it as
?include:spf.trusted-forwarder.org.
I'm curious what other's think of this idea.
Scott K