December 2001
Intermediate to advanced
656 pages
27h 19m
English
Content preview from Networking Explained, 2nd Edition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
76 Networking Explained, Second Edition
SMTP Sender (S): mailserver.bt.com
SMTP Receiver (R): ba.org
Description
S: (mailserver.bt.com establishes a connection to ba.org)
R: 220 ba.org ESMTP Sendmail 8.9.3/8.9.1; Tue, 16 Oct 2001 12:51:49 -0400
(EDT)
S: HELO mailserver.bt.com
R: 250 ba.org Hello mailserver.bt.com, pleased to meet you
S: MAIL FROM:<jb@mailserver.bt.com>
R: 250 <jb@mailserver.bt.com>... Sender ok
S: VRFY <mickie1>
R: 252 Cannot VRFY user; try RCPT to attempt delivery (or try finger)
S: RCPT TO:<mickie1>
R: 250 <mickie1>... Recipient ok
S: DATA
R: 354 Enter mail, end with “.” on a line by itself
S: Hi,
Just a quick message to demonstrate ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.