An email address must respect some conditions to be valid, accordding to the RFC Resume Whois Reputation Tests Domain. MX servers are accessibles Passed. MX must be a domain, not an IP. If the domain or IP is pointing to a website then port must be open so that it can be accessed from a browser.
Domain > elreyx.elreyx.com
Elreyx Com Clips
The most important information is the master server and the contact email address. The mecanism "Redirect" has to be the last tag in SPF record. MX servers are accessibles Passed.