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If you have completed the rest of the process for sending Rezgo notifications from your own domain, you can contact us for instructions on updating your DNS. If you’re already comfortable adding DKIM and SPF records, these are the records you will need to create:

DKIM

DKIM is a DNS-based email authentication mechanism that helps Mandrill more effectively send mail on your behalf by allowing receivers to verify that we have permission to send your email.

To enable DKIM:

1. Create two CNAME records:

  • One with the name mte1._domainkey.yourdomain.com* with the value dkim1.mandrillapp.com
  • Another with the name mte2._domainkey.yourdomain.com* and the value dkim2.mandrillapp.com

2. Click “Test DNS Settings” to check and see if the changes are visible to Mandrill

DMARC

A DMARC policy is an authentication protocol that can be added to your domain to help protect against fraud and increase deliverability. Beginning in 2024, Mandrill requires a minimum DMARC policy of “v=DMARC1; p=none” to be added to any sending domain. Read more about additional configurations available at dmarc.org.

To enable DMARC:

1. Create and save a TXT record in your DNS with a host of _dmarc.yourdomain.com* and a value of v=DMARC1; p=none
2. Click “Test DNS Settings” to check and see if the changes are visible to Mandrill
*Some domain hosts automatically add ‘yourdomain.com’ after the initial value — contact your domain provider for any specifics

SPF

If you don’t already have a TXT record with SPF information, you may need to create one that includes the following:

v=spf1 include:spf.mandrillapp.com ?all

If you already have a TXT record with SPF information, you’ll need to add Mandrill’s servers to that record by adding the following:

include:spf.mandrillapp.com

This goes before the last operator, which is usually ?all, ~all, or -all).