Gmail bounced everything the relay sent: three broken auth mechanisms and a silent OpenDKIM
Short answer: Three independent mechanisms were broken at once, and fixing any one of them changed nothing visible. The domain had no v=spf1 record…
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Как один баг в sendmail создал эру спама и привёл к SPF, DKIM и DMARC
Когда в мае 1978 года Гэри Туерк, маркетолог из Digital Equipment Corporation, отправил 400 сотрудникам ARPANET приглашение на презентацию компьютер…