How to check SMTP relay refers to the process of verifying the functionality and configuration of a Simple Mail Transfer Protocol (SMTP) relay server. An SMTP relay server acts as an intermediary between email senders and recipients, facilitating the delivery of emails across different networks and domains. Checking an SMTP relay involves testing its ability to receive, process, and forward emails reliably and securely.
A well-configured SMTP relay is crucial for ensuring efficient and secure email delivery. It helps prevent spam and phishing attempts, maintains email deliverability, and improves overall email communication. Regularly checking SMTP relays is essential for maintaining optimal email performance and preventing potential issues that could disrupt email communication.