Setting up SPF, DKIM, DMARC like a pro?

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Hello, I'm getting ready for a big campaign and I'm setting up SPF, DKIM, DMARC but have no idea what I'm doing… How much risk is there in screwing up the reputation of my domain by hacking around with these DNS changes? How important is this really? Will I see i.e. 20% more emails hitting my recipients inbox?

submitted by /u/gsmetz
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