Getting mail out of a new Linux box is relatively easy with SSMTP, which is still available in Ubuntu 20.04, thankfully. We need two files set up:
- /etc/ssmtp/ssmtp.conf contains the actual server & authentication info.
- /etc/ssmtp/revaliases supposedly allows aliasing the sender, but that doesn't seem to have worked yet on the new box. Needs confirmation/testing.
The ssmtp.conf file looks a bit like:
# The person who gets all mail for userids < 1000 # Make this empty to disable rewriting. email@example.com # Gmail settings UseTLS=YES UseSTARTTLS=YES #AuthMethod=LOGIN # The place where the mail goes. The actual machine name is required no # MX records are consulted. Commonly mailhosts are named mail.domain.com mailhub=smtp.gmail.com:587 # Where will the mail seem to come from? rewriteDomain=greyduck.net # The full hostname hostname=node3.greyduck.net # Are users allowed to set their own From: address? # YES - Allow the user to specify their own From: address # NO - Use the system generated From: address FromLineOverride=NO # Username and password for Google's Gmail servers # # From addresses are settled by Mutt's rc file, so # # with this setup one can still achieve multi-user SMTP AuthUserfirstname.lastname@example.org AuthPass=APP_PASSWORD_GOES_HERE
And revaliases contains basically just this:
Your mileage may vary.