A record
Points a name to an IPv4 address, commonly used for a website’s root domain.
DNS, in plain language
Quick definitions, practical checks, and direct SaaSTech account instructions for common DNS tasks.
INDEPENDENT DOUBLE-CHECK
Open MXToolbox SuperTool ↗Verify public DNS with MXToolbox
Use these lookups after saving records to see what the internet can retrieve. They diagnose published records; they do not know the tenant-specific values your provider intended.
MX
MX Lookup
MXConfirm which mail servers and priorities are publicly visible.
Run external check ↗SPF Check
MXFind the published SPF record and flag syntax or lookup problems.
Run external check ↗DKIM Check
MXConfirm the public DKIM key is retrievable for a domain and selector.
Run external check ↗DMARC Check
MXParse the published DMARC policy and highlight configuration errors.
Run external check ↗SuperTool
Run DNS, SMTP, reputation, and blacklist diagnostics in one place.
Run external check ↗Use results as a check:Compare MXToolbox results with official provider instructions and your reviewed plan. A warning is a reason to investigate—not permission to delete records.
SAASTECH ACCOUNT GUIDES
Browse all Domain Help ↗Ready to make the reviewed change?
Use these official SaaSTech guides for the exact control-panel steps. Build and review the record values here first.
Manage DNS recordsOpen, add, edit, or remove records in SaaSTech DNS Manager.Open SaaSTech guide ↗Change nameserversUse when moving which provider hosts the complete DNS zone.Open SaaSTech guide ↗Add an A recordPoint a root domain or hostname to an IPv4 address.Open SaaSTech guide ↗Add a CNAME recordPoint www or another subdomain to a provider hostname.Open SaaSTech guide ↗Add a TXT recordAdd ownership verification, SPF, DKIM, or DMARC text.Open SaaSTech guide ↗Add an MX recordDirect incoming email to the correct mail provider.Open SaaSTech guide ↗Add an SPF recordFollow the SaaSTech control-panel steps after building one combined SPF value.Open SaaSTech guide ↗Add a subdomainCreate a host such as shop, payments, or support.Open SaaSTech guide ↗
Two guides, two jobs:Northstar explains what to change and how to stay safe. SaaSTech Domain Help shows where and how to enter it in your account.
GLOSSARY
Common DNS terms
AAAA record
Points a name to an IPv6 address.
CNAME
Makes one hostname an alias of another. A CNAME normally cannot share the same host with other record types.
DNS
The system that translates domain names into destinations used by websites, email, and other services.
DKIM
A mail signature published in DNS that helps receiving systems verify outgoing email.
DMARC
A policy and reporting record that tells receivers what to do when SPF or DKIM checks fail.
Host / Name
The portion of the domain a record applies to. @ commonly means the root domain.
MX record
Directs incoming email. Lower priority numbers are usually preferred first.
Nameservers
Identify the provider that hosts the authoritative DNS zone.
Propagation
The period while DNS resolvers refresh cached information after a change.
SPF
A single TXT policy identifying systems allowed to send mail for a domain.
TTL
How long resolvers can cache a DNS answer before checking again.
TROUBLESHOOTING
Start with the symptom
Website changed, but email stopped+
Check that MX, SPF, DKIM, and DMARC records were preserved. If nameservers changed, compare the new zone with the dated backup.
The provider cannot verify my domain+
Copy the TXT host and value exactly, check whether the DNS manager automatically appends the domain, and allow the current TTL to pass.
The old website still appears+
Check both root and www records, wait through the old TTL, and test from a different network before editing again.
SSL or TLS is still pending+
Confirm the website records are correct and that conflicting CAA, proxy, or duplicate host records are not blocking certificate issuance.
Outgoing mail goes to spam+
Confirm there is one valid SPF record covering all senders, DKIM passes, and DMARC is configured appropriately.
I see duplicate or conflicting records+
Pause. Compare the host and type carefully, use the DNS Builder, and remove a record only when the provider explicitly requires replacement.
WHEN TO STOP
Contact support · 800 987-3709Protect the working services
Roll back or contact support when a critical website, email, payment, authentication, or customer service fails and the cause is not immediately clear.