Describe the addressing system used by SMTP.<\/p>\n\n\n\n
The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n Correct Answer:<\/strong> Explanation (300+ words):<\/strong><\/p>\n\n\n\n SMTP (Simple Mail Transfer Protocol) is the standard protocol used to send emails over the Internet. It is part of the application layer of the TCP\/IP protocol suite and is responsible for the delivery of email messages from the sender\u2019s mail server to the recipient\u2019s mail server. The addressing system used by SMTP is based on email addresses<\/strong>, which uniquely identify the sender and recipient of an email.<\/p>\n\n\n\n An SMTP email address follows the format: For example, in the email address SMTP relies on the Domain Name System (DNS)<\/strong> to resolve the domain part of the email address into an IP address of the recipient’s mail server. It uses a specific type of DNS record called an MX (Mail Exchange) record<\/strong>, which tells the SMTP server which mail server is responsible for receiving emails for that domain.<\/p>\n\n\n\n Here\u2019s a basic outline of how SMTP handles addressing:<\/p>\n\n\n\n
SMTP (Simple Mail Transfer Protocol) uses email addresses<\/strong> that follow the format user@domain<\/code> as its addressing system.<\/p>\n\n\n\n
\n\n\n\nuser@domain<\/code><\/strong>, where:<\/p>\n\n\n\n\n
user<\/code><\/strong> represents the username or the local part, which identifies a specific mailbox or user account on the mail server.<\/li>\n\n\n\ndomain<\/code><\/strong> represents the domain name of the mail server that hosts the recipient’s email account.<\/li>\n<\/ul>\n\n\n\njohn.doe@example.com<\/code>, john.doe<\/code> is the user, and example.com<\/code> is the domain.<\/p>\n\n\n\n\n
alice@xyz.com<\/code>) and connects to the sender\u2019s SMTP server.<\/li>\n\n\n\nxyz.com<\/code>) and queries DNS for the MX record.<\/li>\n\n\n\n