movd · June 6, 2019 11:02 · Jun 6, 2019 · Jun 6, 2019
diff --git a/emails_from_ubuntu.md b/emails_from_ubuntu.md
@@ -1,4 +1,4 @@
-# Setting up email on with SMTP on Ubuntu/Debian Servers
+# Setting up email with SMTP on Ubuntu/Debian Servers
 
 I used to sift trough my shell history and bookmarks every time I set up a new
 testing server in order to be able to send mails. So this should help...

diff --git a/emails_from_ubuntu.md b/emails_from_ubuntu.md
@@ -0,0 +1,111 @@
+# Setting up email on with SMTP on Ubuntu/Debian Servers
+
+I used to sift trough my shell history and bookmarks every time I set up a new
+testing server in order to be able to send mails. So this should help...
+
+*Be aware don't use `ssmtp` anymore. It's unmaintained and has [been removed
+from Debian](https://tracker.debian.org/news/956307/ssmtp-removed-from-testing/)
+and Ubuntu will most definitely follow suit.*
+
+## Install msmtp
+
+First we need the awesome program called [msmtp](https://marlam.de/msmtp/) to route all the server's mail through a standard SMTP server. 
+
+`sudo apt-get install msmtp msmtp-mta mailutils`
+
+## Set up msmtp
+
+`sudo nano /etc/msmtprc`
+
+```sh
+# Set default values for all following accounts.
+defaults
+
+# Use the mail submission port 587 instead of the SMTP port 25.
+port 587
+
+# Always use TLS.
+tls on
+
+# Set a list of trusted CAs for TLS. The default is to use system settings, but
+# you can select your own file.
+tls_trust_file /etc/ssl/certs/ca-certificates.crt
+
+# The SMTP server of your ISP
+account isp
+host mail.isp.example
+from smithjoe@isp.example
+auth on
+user 12345
+
+# Set default account to isp
+account default: isp
+
+# Map local users to mail addresses
+aliases /etc/aliases
+```
+
+The above is based on the [example](https://marlam.de/msmtp/msmtprc.txt). The
+program has many more authentication methods. 
+
+
+## Install and set up mailx
+
+In order to be able to use the `mail` command wee need to install `mailx`
+
+`sudo apt-get install bsd-mailx`
+
+Set mail transport agent to use `msmtp`
+
+`sudo nano /etc/mail.rc`
+
+append the following:
+
+
+```sh
+set mta=/usr/bin/msmtp
+```
+
+## Set up aliases
+
+We need to link system users with email addresses in order for system users to receive mails from cronjobs.
+
+`sudo nano /etc/aliases`
+
+```sh
+# Send root to Jane
+root: jane_doe@example.com
+
+# Send everything else to admin
+default: admin@domain.example
+```
+
+`sudo nano /etc/mail.rc`
+
+append:
+
+```sh
+alias root root<jane_doe@example.com>
+```
+
+Emails are now sent to this address if e.g. a cronjob fails. Also a general
+fallback address is used if messages don't belong to root. Of course more users
+can be set.
+
+## Test it!
+
+`echo "Hello World" | msmtp -d bob@example.com`
+
+Test sending a mail to root 
+
+`echo "Testing msmtp from ${HOSTNAME} with mail command" | mail -s "hi root" root`
+
+Test sending a mail to another email adress
+
+`echo "Testing msmtp from ${HOSTNAME} with mail command" | mail -s "hi there" bob@example.com`
+
+### Links
+
+<https://marlam.de/msmtp/>
+
+<https://wiki.archlinux.org/index.php/Msmtp>
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