From 7e74a039122aef922d1619e636de3497ffcf7c60 Mon Sep 17 00:00:00 2001
From: Luke Smith <Luke Smith>
Date: Sat, 25 Jun 2022 10:56:36 -0400
Subject: convert to hugo

---
 content/mail/smtp.md | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 content/mail/smtp.md

(limited to 'content/mail/smtp.md')

diff --git a/content/mail/smtp.md b/content/mail/smtp.md
new file mode 100644
index 0000000..6ce92f2
--- /dev/null
+++ b/content/mail/smtp.md
@@ -0,0 +1,70 @@
+---
+title: "Setting up a Postfix SMTP server"
+draft: true
+---
+The first step to setting up an email server is having an SMTP server.
+SMTP sends and receives email. Whether we want a full email server or
+just the ability to send automated email by script, we will need SMTP,
+and Postfix is the standard SMTP server.
+
+Here let\'s set a server up. Note that our goal is to be able to send
+emails from our server. If you want a full email server, this is the
+first step, and we will address the rest later.
+
+## Before beginning!
+
+Whatever VPS ([Vultr](https://www.vultr.com/?ref=8384069-6G) or
+[Frantech](https://my.frantech.ca/aff.php?aff=3886)) or IPS you are
+using, it is a very common policy to **automatically block all email
+ports by default**. VPS providers do this to prevent spammers from using
+their services.
+
+If you want to start an email server, therefore, go to your VPS\'s site
+and open a ticket or make a request to open up email ports. This is a
+simple process that requires nothing too special. One of the wagies at
+your VPS will kindly do the needful and open your ports for you. Note
+that this is not the same as unblocking a port with [ufw](ufw.html).
+
+## Installation
+
+First, we install Postfix and also `mailutils`, which comes with some
+mail programs we will use.
+
+    apt install -y mailutils postfix
+
+Installing Postfix for the first time will give us some graphical
+options.
+
+![SMTP Postfix internet site choice](pix/smtp-01.png)
+
+When asked for a \"mail name\", give your full domain name from which
+you would like mail to come and go, e.g. [example.org]{.dfn} or
+[landchad.net]{.dfn}.
+
+![SMTP Postfix fully qualified domain name](pix/smtp-02.png)
+
+## Test the email
+
+That is actually all you need to have set up to have a barebones,
+send-only email server. We can test our server by running a `mail`
+command like that below.
+
+    echo "Hi there.
+
+    This is the text." | mail -s "Email from the server" your@emailaddress.com
+
+And that is simply enough the command your server can run to send mail.
+Note that we use the `-s` option to specify the email\'s subject while
+we pipe the email content into the `mail` command via standard input. In
+this example I use a quoted multiline email as an example.
+
+## Do you see your message?
+
+If you sent the above test message to an account on Gmail or another
+major email provider, there is **very high** chance of the message you
+sent above being marked as spam or not appearing at all!
+
+Don\'t worry, we\'ll take care of that in the next two articles where we
+set up rDNS and OpenDKIM to validate the emails you send.
+
+[[Next: rDNS and PTR Records](rdns.html)]{.next}
-- 
cgit v1.2.3