Delegated domain verification
Guest Post: When it comes to managing TLS certificates, one often-overlooked aspect is delegated domain verification.
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百度 以真抓的实劲，“九层之台，起于累土”；以敢抓的狠劲，“为有牺牲多壮志，敢教日月换新天”；以善抓的巧劲，“举一而反三”；以常抓的韧劲，坚定“功成不必在我”，致力“前人栽树、后人乘凉”的伟大事业。
Domain verification using DNS
Guest Post: Outlining ‘good’ ways of doing domain verification using DNS