SMT (Simple Mail Transfer), POP3, or even plain HTML
SMTP (send mail transfer protocol)
An example of a mail service in a network is Simple Mail Transfer Protocol (SMTP), which is used for sending emails between servers. SMTP facilitates the transfer of messages from a client to a server or between servers, ensuring that emails reach their intended recipients efficiently. Additionally, Post Office Protocol (POP3) and Internet Message Access Protocol (IMAP) are commonly used for retrieving and managing emails from a mail server.
Pop 3
465 is the default port number for SMTP. SMTP stands for Simple Mail Transfer Protocol. It is used for sending Emails over the network.
The protocol used to send an unknown message back to originating hosts is Internet Control Message Protocol (ICMP). Specifically, ICMP can send messages such as "Destination Unreachable," which informs the sender that a packet could not reach its intended destination. This helps in diagnosing network issues and improving communication reliability.
Network Control Protocol is uses to identify the Network layer protocol used in the packet
Class D
Simple Mail Transfer Protocol, is the technology used to send out email messages. It goes hand in hand with POP (Post Office Protocol) that is, typically, employed for receiving emails from a web server to an email program or an email client.
NTP(Network Time Protocol)
NTP (Network Time Protocol)
SNMP is the most widely used protocol for network monitoring
File transfer protocol