Without knowing everyone’s domains and IPs and history, it’s hard to judge competency in a thread like this. SPF, DKIM, and DMARC are important to set up correc

Without knowing everyone’s domains and IPs and history, it’s hard to judge competency in a thread like this. SPF, DKIM, and DMARC are important to set up correctly, but doing so is NOT sufficient for good deliverability. In fact it is only a small component of success. Well-established organizations that have a long history of sending steady volumes of high quality content with low complaints have a huge leg up. So if you work at such a place, or you contract with such a vendor, you’re going to feel like it’s obvious that the DNS entries work well.