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How widely are those deployed? Can you get away with ignoring submissions from servers that don't have them set up?
by bct 18y ago
How widely are those deployed? Can you get away with ignoring submissions from servers that don't have them set up?
- dfranke 18y agoNo, not even close. SPF is not a spam prevention measure. It's just a way of protecting innocent senders from being impersonated by spammers. DKIM does a better job at the same purpose.