One-time DNS Configuration for DynDNS Standard DNS
Updated over a week ago

In order to add NS records in DynDNS' Standard DNS service, we'll be using the "Expert Interface"

Sign in and Edit DNS Records

  1. Sign in to your Dyn account and find the 'My Services' option

  2. Find the Zone you wish to add a record to and click on "Dyn Standard DNS Service" next to the zone's name

  3. Scroll to the bottom of the zone information screen to access the "Add DNS Record" field

Below are a set of instructions for adding and configuring each record type.


1. Enter the following into each field:

  • HOST: _dmarc

  • TYPE: NS

  • DATA:

2. Set the TTL to 300

You can pick another Time To Live value up to 3600, but we recommend 300 seconds

3. Click 'Create Record'

4. Delete the “_dmarc” TXT record from your DNS zones after you’ve added the NS record if one exists


Just as you've created an NS record for the _dmarc subdomain, now you will need to create one for the _domainkey subdomain.

1. Add another record

2. The NS record should have a HOST value of _domainkey with TYPE value of NS and a DATA value of and a TTL of 300.


To delegate SPF to Valimail for email authentication, you'll need to add a TXT record that includes Valimail's SPF macro.

1. If you have an existing record that addresses SPF, backup and remove it. If not, move to step two.

2. Add the following TXT record for your domain:

  • HOST:


  • DATA: v=spf1 include:%{i}._ip.%{h}._ehlo.%{d} ~all

  • TTL: 300 seconds

Additional reading:

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