I have 3 domains where mail is not getting delivered. I need somebody to check the domains and let me know which DNS records require changing/adding. Also, one domain is blacklisted.
One uses my VPS Server but a couple are Gmail accounts with linked domains. I have full access to the DNS for all of the domains. I suspect that some of the issues are incorrectly configured SPF, DKIM or DMARC.
When sending via the linked Gmail accounts I do have issues sending to Hotmail accounts but all others appear to work fine. I can give full details of the domains and some example error messages I am receiving via chat.
I am hoping you have the necessary tools to check and then recommend the changes necessary.