On Mon, 27 Feb 2006 16:11:59 -0500 (EST), "Stuart D. Gathman"
<stuart(_at_)bmsi(_dot_)com> wrote:
It is technically very cheap to require end users to use SMTP AUTH
to send mail from the ISP domain - but a big education campaign is
needed to get users to actually put in the proper outgoing SMTP
configuration.
Big education == frustrated users == lost customers
A large ISP has to balance the benefit of cheaply rejecting forgeries
detected by SPF with the cost of providing the necessary configuration
options for users to handle non-SRS forwarders.
I wonder how many users, who don't know what SMTP AUTH is, much less
configure it, are able and willing to configure their own customized
SPF forwarding exceptions.
I'm beginning to wonder if SPF is just a pie in the sky that will do
little more than confuse people for a while, before they finally give
up and try something else.
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