Using SparkPost with PowerMTA

If you’re interested in relaying mail through PowerMTA to SparkPost, there are only a few things you need to do. First, create a SparkPost account if you don’t already have one.

Now create and verify the domain you want to use for sending. The setup process should take about 5-10 minutes if you have access to your DNS server. See Verify Sending Domains for more information.

Add the following to your PowerMTA config, changing the value for auth-password to the SparkPost API key you created above:

<domain sparkpost.rollup>
 use-unencrypted-plain-auth yes
 auth-username SMTP_Injection
 auth-password xxxxxxxx
 route smtp.sparkpostmail.com:587
 use-starttls yes
 require-starttls yes
 max-smtp-out 10
</domain>

<domain *>
 queue-to sparkpost.rollup
</domain>

use-unencrypted-plain-auth yes

auth-username SMTP_Injection

auth-password xxxxxxxx

route smtp.sparkpostmail.com:587

use-starttls yes

require-starttls yes

max-smtp-out 10

</domain>

queue-to sparkpost.rollup

</domain>

Two great benefits of using PowerMTA to relay to SparkPost are you don’t need to change your existing architecture, and PowerMTA handles all the queueing and any network issues that might arise during delivery.You also get the excellent built in metrics that are part of SparkPost.