March 2007
Intermediate to advanced
304 pages
11h 12m
English
Content preview from Linux System Administration
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.
Adding Authentication and Encryption
|
111
Date: Tue, 11 Jul 2006 17:38:32 -0500
From: "Tom Adelstein" <tadelstein@gmail.com>
To: tadelste@server2.centralsoft.org
Subject: Testing simple STMP services
We're sending this email to test our mail server's capability to send
and receive simple SMTP mail.
Then I replied to the original email and received it in my Gmail account:
Delivered-To: tadelstein@gmail.com
Received: from server2.centralsoft.org
Tue, 11 Jul 2006 16:10:44 -0700 (PDT)
To:tadelstein@gmail.com
Subject: Re: testing simple SMTP mail
In-Reply-To
tadelste@server2.centralsoft.org (Tom Adelstein)
We're sending this email to test our mail server's capability to send
and receive simple SMTP mail
Using the mail command is a primitive way to way to manage large volumes of mail,
even in a shell account. An alternative is mutt, which has a robust interface and sig-
nificantly more features. As an administrator, you may want to use one of these com-
mand-line mail user agents when receiving mail from your Linux system service
accounts.
Adding Authentication and Encryption
We’ve now configured a default SMTP server. What else can we do with Postfix? In
this section we will add authentication (using SASL) and encryption (using TLS) to
our configuration file, /etc/postfix/main.cf. With authentication, we make sure only
users with proper credentials can use our SMTP server. With encryption, we make
sure we do ...
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.