Exam N10-008 topic 1 question 661 discussion

Port 587 is the standard for secure email submission when encryption is required.

D. 587 Port 587 is commonly used for secure email transmission. It is the default port for the submission of email messages to be sent out by email clients securely using the STARTTLS encryption protocol. This port is often associated with the submission of outgoing email by mail clients to a mail server. The other port numbers mentioned: - A. Port 25: This is the default port for unencrypted SMTP (Simple Mail Transfer Protocol) traffic. It is commonly used for email communication but without encryption. - B. Port 110: This is the default port for unencrypted POP3 (Post Office Protocol version 3) traffic, which is used for retrieving emails from a mail server. - C. Port 143: This is the default port for unencrypted IMAP (Internet Message Access Protocol) traffic, which is used for accessing and managing email messages on a mail server.

D. 587 Port 587 is typically used for secure email submission, specifically for sending emails securely using the SMTP (Simple Mail Transfer Protocol) with TLS (Transport Layer Security) or SSL (Secure Sockets Layer) encryption. It's commonly used as an alternative to port 25 for secure mail submission by mail clients or applications.