Thanks for reminding me of MX Toolbox, and sorry you couldn’t get it to work.
Mx Toolbox detected I was missing an SPF record. I then set this through the Mythic Beasts control panel and Mx Toolbox is happy. (I’m pretty sure sympl-dns-audit was happy about SPF yesterday when I set it using _spf to “v=spf1 +a +mx ?all” on the DNS configuration panel yesterday hmmm…)
Mx Toolbox still throws three warnings, two about SOA Serial Number and Expiration, which I’m not sure I’ll tackle, but one about
“Reverse DNS Resolution - No PTR Record found”
(for smtp)
I got as far as My Account - Mythic Beasts and for the IPv4 record of my server, set ‘Reverse DNS’ to:
example.com and mx.example.com
Trying each time whether mx Toolbox is happy – it still throws the same problem.
Maybe because it hasn’t had time to propagate yet?
*Does anyone know what this should be set to?
*For one domain, but also for multiple domains? It seems it takes only one value.
P.S. It has now propagated (set to mx.example.com) but now I get “Reverse DNS does not match SMTP Banner” - I’ll take it out again for now.