Sending emails via SMTP on Ubuntu or Debian Servers

Unknown — Mon, 25 Nov 2019 20:40:00 +0000

I used to sift trough my shell history and bookmarks every time set up sending email on a new Debian or Ubuntu server. This should help everybody who just wants to send email trough an old school ISP or free email service.

Be aware don't use ssmtp</code> anymore. It's unmaintained and has been removed from Debian</a> and Ubuntu will most definitely follow suit.

Install msmtp#</a> </h2> First we need the awesome program called msmtp</a> to route all the server's mail through a standard SMTP server. sudo apt-get install msmtp msmtp-mta mailutils</code> Set up msmtp#</a> </h2> sudo nano /etc/msmtprc</code> # 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 </code></pre> The above is based on the example</a>. The program has many more authentication methods. Install and set up mailx#</a> </h2> In order to be able to use the mail</code> command wee need to install mailx</code> sudo apt-get install bsd-mailx</code> Set mail transport agent to use msmtp</code> sudo nano /etc/mail.rc</code> append the following: set mta=/usr/bin/msmtp </code></pre> Set up aliases#</a> </h2> We need to link system users with email addresses in order for system users to receive mails from cronjobs. sudo nano /etc/aliases</code> # Send root to Jane root: jane_doe@example.com # Send everything else to admin default: admin@domain.example </code></pre> sudo nano /etc/mail.rc</code> append: alias root root<jane_doe@example.com> </code></pre> 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!#</a> </h2> echo "Hello World" | msmtp -d bob@example.com</code> Test sending a mail to root echo "Testing msmtp from ${HOSTNAME} with mail command" | mail -s "hi root" root</code> Test sending a mail to another email adress echo "Testing msmtp from ${HOSTNAME} with mail command" | mail -s "hi there" bob@example.com</code> Links#</a> </h3> https://marlam.de/msmtp/</a> https://wiki.archlinux.org/index.php/Msmtp</a>

moritzvd.eu - Linux

Sending emails via SMTP on Ubuntu or Debian Servers

`#</a> </h3> https://marlam.de/msmtp/</a></p> https://wiki.archlinux.org/index.php/Msmtp</a></p>`

`#</a> </h3> https://marlam.de/msmtp/</a></p> https://wiki.archlinux.org/index.php/Msmtp</a></p>`

`#</a> </h3> https://marlam.de/msmtp/</a></p> https://wiki.archlinux.org/index.php/Msmtp</a></p>`

moritzvd.eu - Linux

Sending emails via SMTP on Ubuntu or Debian Servers

Links#</a> </h3> https://marlam.de/msmtp/</a></p> https://wiki.archlinux.org/index.php/Msmtp</a></p>

`#</a> </h3> https://marlam.de/msmtp/</a></p> https://wiki.archlinux.org/index.php/Msmtp</a></p>`