Almost all of the spam I analyze has bad security records - ignoring anything with a bad / no DMARC would stop probably 80% of our spam problems.
The rest is a mix of no SPF/DKIM (I have no idea why that's even being accepted) and internal problems at the sender's computer. You're never going to fix PEBCAC.
Almost all of the spam I analyze has bad security records - ignoring anything with a bad / no DMARC would stop probably 80% of our spam problems.
The rest is a mix of no SPF/DKIM (I have no idea why that's even being accepted) and internal problems at the sender's computer. You're never going to fix PEBCAC.
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