Show the mail-exchange records on any domain — the servers that accept inbound email. MX records are the foundation of email delivery; missing or misconfigured MX is the most common cause of "mail to your domain just disappears." This tool returns each MX host with its priority value.
Priority determines order: lower number = higher priority. Senders try the lowest-priority host first; if it's unreachable, they fall back to the next. Most domains list 2-5 MX records for redundancy.
Common patterns: Google Workspace points all priorities to smtp.google.com or aspmx.l.google.com + four ALT hosts. Microsoft 365 points to <tenant>-com.mail.protection.outlook.com.