SMTP stands for Simple Mail Transfer Protocol. It uses TCP Port 25. SMTP is the protocol used to send outgoing email from a device to a mail server, or from one server to another. SMTP is commonly configured on mobile devices to send email.
2.1 Ports & Protocols: 25 – SMTP
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
