Unable to get SendMail to work.
I set up my mx record to be "mail" with priority one. I am able to successfully ping firstname.lastname@example.org I've followed this documentation: https://wiki.archlinux.org/index.php/sendmail I then: $ sendmail -vt < test-message.txt The output looks like this (please note that I changed some of the stuff to hide my droplet name, domain name, and username. I've cap-locked those parts to make it obvious. WARNING: local host name (DROPLET) is not qualified; see cf/README: WHO AM I? TEST@EMAIL.COM... Connecting to [127.0.0.1] via relay... 220 MY-DOMAIN.COM ESMTP Sendmail 8.14.7/8.14.7; Mon, 23 Dec 2013 06:00:31 GMT >>> EHLO camille 250-MY-DOMAIN.COM Hello localhost.localdomain [127.0.0.1], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-EXPN 250-VERB 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP >>> VERB 250 2.0.0 Verbose mode >>> MAIL From: SIZE=111 050 ... Transient parse error -- message queued for future delivery 553 5.1.8 ... Domain of sender address MY-LOGIN@MY-DROPLET does not exist .../dead.letter... Saved message in .../dead.letter Closing connection to [127.0.0.1] >>> QUIT 221 2.0.0 MY-DOMAIN.COM closing connection