Our friends at CipherTrust report that more spam is passing Sender-Policy-Framework (SPF) tests than real email. Thirty four percent more. Why?

Because spammers know the junkmail won’t go through without passing. They’re no longer faking the sender address. Clever folks. So clever, in fact, that at least one has tried opening an SPF Spoofing Service. Unfortunately, the hapless soul discovered a hostile market.

Closed shop in under a week. Mumbled something about death threats…