DNS: The Single Source of Truth

The DNS database is a basic infrastructure of the internet, allowing systems to lookup records about each other and make trusted connections.

Why it's safe to point SPF/DKIM/DMARC to Valimail
Hosting these records to help customers is the core of our business. Valimail does not host your entire DNS. We only host SPF, DKIM and DMARC records a...
Fri, 5 Mar, 2021 at 10:35 PM
Valimail DNS Downtime
What happens if Valimail’s DNS service is unavailable If there is a problem with the Valimail platform it "fails open". This means that in the...
Thu, 17 Jun, 2021 at 11:42 AM
My DNS provider doesn't allow creation of NS records. What workarounds are possible?
If you previously received instructions to instructions to create an NS record in order to connect to Valimail Monitor, please refer to the following instru...
Wed, 4 Sep, 2019 at 3:07 PM
Legal Characters in DNS
The Domain Name System consists of domain names, as the name suggests. The DNS standards, as updated in RFC 2181, clarifies that there are only two restrict...
Mon, 6 Apr, 2020 at 11:18 AM
Why do some DNS providers not allow Valimail’s NS delegation for DMARC and DKIM?
The Valimail DMARC and DKIM configuration are standard DNS delegations and are supported by any DNS server. Some DNS providers, typically those focussed on ...
Mon, 6 Apr, 2020 at 12:54 PM
Checking consistency of DNS Servers
All domains will have at least two DNS servers associated with the domain. Many domains will have more than two. The DNS data on all servers for a domain ne...
Tue, 21 Apr, 2020 at 9:37 AM
Email authentication for multiple DNS views
Many companies will configure their DNS to have multiple DNS Views. A DNS view is a copy of one or more DNS zones that is only accessible to a specified set...
Wed, 17 Feb, 2021 at 3:48 PM
Understanding the DNS resolution path
When troubleshooting an issue with DNS, it is often helpful to understand what DNS servers are involved in resolving a query. Dig allows you to see this usi...
Tue, 21 Apr, 2020 at 9:45 AM
Deliverability Advice Questions
Valimail Support occasionally receives questions about advice on deliverability for specific marketing or general email tools. Domains that are at DMARC...
Thu, 10 Jun, 2021 at 7:13 AM
DMARC/DKIM NS Records: Why You Shouldn't Be Concerned
Summary A standard Valimail customer engagement requires that the customer point two DNS zones to Valimail, one for DKIM (e.g., _domainkey.example.com) and...
Thu, 9 Sep, 2021 at 10:41 AM