SMTP
SMTP (Simple Mail Transfer Protocol) is the protocol mail servers use to send and relay outgoing email.
If your SMTP server is down or misconfigured, outgoing mail, receipts, password resets, alerts, silently stops. SMTP monitoring verifies the server accepts connections and responds correctly, catching delivery problems before customers notice.
Related terms
IMAPIMAP (Internet Message Access Protocol) lets email clients read and manage messages stored on a mail server, keeping them in sync across devices.MX RecordAn MX (Mail Exchange) record is a DNS record that tells the internet which mail servers are responsible for receiving email for a domain.DNSBL / RBL (Blocklist)A DNSBL (DNS-based Blocklist), also called an RBL, is a published list of IP addresses or domains flagged for sending spam or malicious traffic.
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