Bureaucrats, confirmed, Administrators
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use mailutils
<li><source lang="bash"> sudo su - </source>
<li><source lang="bash"> apt-get install postfix </source>
<li><source lang="bash"> apt-get install bsd-mailx # or apt-get install mailutils</source>
<li><pre>cat <<HERE | sudo tee /etc/postfix/main.cf > /dev/null
# work-around for Digital Ocean's blocking of IPv6 for email