On 14/09/04 15:59 -0400, Daniel Feenberg wrote:
<snip>
The only way I can understand SPF is as a way to distinguish spam from
non-spam on a single sending MTA. If the ISP thinks a host sends only
spam, aren't there are easier ways to deal with the situation?
Right. Think of SPF as a reversed MX record for a given domain, and the
situation becomes clearer.
The cost of breaking .forward, IMO, outweighs the advantages that SPF
offers.
If SPF becomes commonly used, then blocking by domain will become more
effective, rather than the current practice of blocking by IP (which is
already very effective).
Devdas Bhagat
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