Without these records you’re a lot more likely to go to spam, or get rejected outright. If you have questions about it, ask here or DM me and I’ll be glad to help.
Recently I added a custom domain to my protonmail account and during the procedure it makes you do this steps (adding SPD, DKIM and DMARC) to pass all the steps. They tell you exactly what records you have to add, where to add them and what the content should be. These guys are great
For anyone using a custom domain, or thinking about it, read this: https://dmarcly.com/blog/how-to-implement-dmarc-dkim-spf-to-stop-email-spoofing-phishing-the-definitive-guide
Without these records you’re a lot more likely to go to spam, or get rejected outright. If you have questions about it, ask here or DM me and I’ll be glad to help.
Recently I added a custom domain to my protonmail account and during the procedure it makes you do this steps (adding SPD, DKIM and DMARC) to pass all the steps. They tell you exactly what records you have to add, where to add them and what the content should be. These guys are great