Category Archives: portocal overview

SMTP is a connection oriented, text-based protocol in which a mail sender communicates with a mail receiver by issuing command strings and supplying necessary data over a reliable ordered data stream channel, typically a Transmission Control Portocal (TCP) connection. An SMTP transaction consists of three command/reply sequences: MAIL command, to establish the return address, also called return-path, reverse-path, or envelope sender. RCPT command, toContinue reading “Protocal overview”