Why SPF over PTR?
gregrjones at yahoo.com
Mon Nov 29 20:12:27 UTC 2004
I must not be understanding SPF correctly because I don't understand
why it is better for preventing sender domain forgeries than doing a
simple PTR lookup.
Wouldn't a simple comparison of the sender's IP address to their
domain name via a PTR record lookup be sufficient to check for
forgeries? I realize that not everyone has PTR records, but more have
PTR records than SPF records.
What am I missing?
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