Episode 58: Email Protocols — SMTP, POP3, IMAP, and Their Secure Variants
This episode introduces the protocols that enable email delivery and retrieval. Simple Mail Transfer Protocol (SMTP) is used to send messages, while Post Office Protocol version 3 (POP3) and Internet Message Access Protocol (IMAP) allow users to retrieve and manage emails. The exam also covers secure versions of these protocols, such as SMTPS, POP3S, and IMAPS, which use encryption to protect communication. Recognizing how these protocols interact is essential for both the test and practical troubleshooting.
The discussion expands with real-world examples. POP3 downloads emails for local storage, IMAP synchronizes across multiple devices, and SMTP relays outgoing mail through servers. Troubleshooting scenarios include diagnosing blocked ports, encryption mismatches, or misconfigured authentication that prevent proper mail flow. By mastering these protocols, you will be able to answer exam questions accurately and resolve issues in production environments. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your certification path.
