======= Configuring Postfix for Sparkpost =======

NOTE: Before doing anything, make sure you have set the full qualified domain name of your server (AWS will not do this for you)


  * hostnamectl set-hostname <//name//>.<//domain//>

Install the tools you will need

  * apt install postfix mailutils
  * cp /usr/share/postfix/main.cf.debian /etc/postfix/main.cf
  * systemctl enable postfix
  * systemctl start postfix
  * cd /etc/postfix
  * edit main.cf and change the parameter my-origin and change it to the following: my-origin = <domain>
  * Add the following to the end
<code>
myhostname=<host>.<domain>
mydomain=<domain>
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = static:SMTP_Injection:<hash string>
relayhost = [smtp.sparkpostmail.com]:587
smtp_sasl_security_options = noanonymous
smtp_tls_security_level = encrypt
header_size_limit = 4096000
</code>


Go to the Sparkpost Console

  * Add a domain
  * Enter the information and note the DKIM record
  * Add that record to your DNS  (on AWS/Route 53 add as a TXT)
  * In Sparkpost, verify that the DKIM record is correct


From your host
 
  * echo "Test mail from New Ubuntu Server" | mail -s "Test Email"  <//email address//>