I am new to Cloudflare and need a bit of assistance. I run a WP/WC site and send mails through MailGun. Also I have added the “Really Simple SSL” plugin for security.
Mailgun support have send me below guidance, but I am actually not really sure what I need to do.
With Cloudflare, since they’re handling the HTTPS connection for this hostname, the certificate would need to be configured on their platform. The Cloudflare free certificate does not cover 3rd level or higher hostnames and a custom certificate would need to be obtained through Cloudflare to cover the subdomain, email.selvbetjening.trtd.dk.