Why do HTTP, FTP, SMTP, and POP3 run on top of TCP rather than on UDP? Tweet. Answer. TCP provides all application data be received in the correct order and without gaps, but UDP does not. So, HTTP, FTP, SMTP, and POP3 run on top of TCP rather than on UDP. 0 0 <> Discussions.

Why do HTTP FTP SMTP and POP3 run on top of TCP | sr2jr Why do HTTP, FTP, SMTP, and POP3 run on top of TCP rather than on UDP? Tweet. Answer. TCP provides all application data be received in the correct order and without gaps, but UDP does not. So, HTTP, FTP, SMTP, and POP3 run on top of TCP rather than on UDP. 0 0 <> Discussions. SMTP - Simple Mail Transfer Protocol - javatpoint SMTP. SMTP stands for Simple Mail Transfer Protocol. SMTP is a set of communication guidelines that allow software to transmit an electronic mail over the internet is called Simple Mail Transfer Protocol.; It is a program used for sending messages to other computer users based on e-mail addresses.

TCP and UDP ports used by Apple software products

Guaranteed communication over TCP port 587 is the main difference between TCP and UDP. UDP port 587 would not have guaranteed communication as TCP. UDP on port 587 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. Difference Between SMTP and POP | Difference Between 1.SMTP (Simple Mail Transfer Protocol) and POP (Post Office Protocol) are both standards used for emailing. 2.Simply put, SMTP is used when receiving and sending emails (like your very own mailman who picks up and delivers your mail to different locations), while POP is the protocol used for storing emails (like your very own Post Office Box

UDP – what the User Datagram Protocol can do - IONOS

One way to look at SMTP is that it runs on top of the TCP/IP protocol stack. Quite often people use the term handshake to describe SMTP and TCP. The TCP handshake establishes the connection at a TCP level (vs the connectionless protocol UDP). The Email Ports – POP3, IMAP and SMTP Port Numbers Aug 29, 2016 Port 587 (tcp/udp) - Online TCP UDP port finder - adminsub.net