Guides tagged “dns”
Step-by-step MdmHost guides about dns, sorted A-Z.
62 guides · page 4 of 4
What is reverse DNS (rDNS) and why it matters
Reverse DNS maps an IP address back to a hostname using a PTR record. Learn how it differs from normal DNS, why mail servers check it, and how to look it up from your own computer.
WordPress site down? A step-by-step checklist
Work out why a WordPress site is offline: check if it is down for everyone, domain and DNS, SSL, hosting account status, resource limits, PHP errors and the database.
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