From ecc9138f37fcd71a8bb9b3644eb24ec2837648a7 Mon Sep 17 00:00:00 2001 From: Durrez Ahmed Date: Mon, 15 Aug 2022 19:43:53 +0530 Subject: [PATCH] Add content for smtp --- .../103-networking-protocols/103-emails/101-smtp.md | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/content/roadmaps/102-devops/content/103-networking-protocols/103-emails/101-smtp.md b/content/roadmaps/102-devops/content/103-networking-protocols/103-emails/101-smtp.md index 8fef6cef5..41a0d77d1 100644 --- a/content/roadmaps/102-devops/content/103-networking-protocols/103-emails/101-smtp.md +++ b/content/roadmaps/102-devops/content/103-networking-protocols/103-emails/101-smtp.md @@ -1 +1,8 @@ -# Smtp \ No newline at end of file +# SMTP + +Email is emerging as one of the most valuable services on the internet today. Most internet systems use SMTP as a method to transfer mail from one user to another. SMTP is a push protocol and is used to send the mail whereas POP (post office protocol) or IMAP (internet message access protocol) are used to retrieve those emails at the receiver’s side. + +SMTP is an application layer protocol. The client who wants to send the mail opens a TCP connection to the SMTP server and then sends the mail across the connection. The SMTP server is an always-on listening mode. As soon as it listens for a TCP connection from any client, the SMTP process initiates a connection through port 25. After successfully establishing a TCP connection the client process sends the mail instantly. + +Free Content +What is Simple Mail Transfer Protocol (SMTP)?