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You do not have to do this work yourself. You do have to know who does it, and what to ask them for.
Educational guidance. Email security is not part of the TireTutor product, and TireTutor does not manage your mailboxes. These pages explain how it works so you can brief the right person.
Run the two checks first. Bring the results to this page.

Who does which part

Two companies share the work. Neither one can finish it alone.

Step 1 — Find out who can edit your DNS

Most shops do not know this. Work down the list until you get a name.
Do not create a new domain or a new DNS account to get around missing access. Two DNS setups for one domain break your mail.
1

Ask whoever renews the domain name each year

That person holds the registrar login, or knows who does.
2

Ask your IT provider, if you use one

Ask specifically about DNS records. Do not ask about your website.
3

Ask the company that set up your email

They often kept the access after the original setup.
4

Contact your email provider's support

Google and Microsoft support can read your domain and name your DNS host.
You have a person or a company, and a way to contact them.

Step 2 — Send the request

Copy the message below. Replace example.com with your domain. Send it to whoever edits your DNS. Pick the SPF line that matches your email provider.
Request to your DNS host
The DMARC line needs a real mailbox at your domain to receive the reports. Create dmarc@example.com, or name a mailbox someone monitors.

Step 3 — Ask your email provider to turn on DKIM

DKIM is the one record your DNS host cannot produce. Your email provider generates it. If you administer your own Google Workspace or Microsoft 365 account, follow your provider’s article in the reference. Otherwise send this message.
Request to your email provider or IT support
Publishing the DKIM record is not the last step. Someone must go back into the email provider and start the signing. Many setups stop one click early and stay broken.

Step 4 — Confirm the work

A DNS change usually spreads within an hour, sometimes longer. Then run Check 1 again.
SPF, DKIM, and DMARC all say PASS on a message you just sent.
Trust that grade, not a confirmation email. The grade comes from a mail system that actually received your message.

Step 5 — Tighten DMARC later

Your DMARC record starts at p=none. That setting reports fakes but blocks nothing. It is the safe place to start.
Never jump straight to p=reject. Skip the reporting weeks and you block your own invoices from a tool you forgot about.
1

Read your DMARC reports for two to four weeks

They name every system sending mail as your shop. The reports arrive as machine-readable files, not as plain summaries. Ask your IT provider to read them for you.
2

Add any of your own tools that appear

Booking tools, review platforms, and newsletters each need an SPF entry.
3

Ask your DNS host to change p=none to p=quarantine

Fakes go to spam instead of the inbox.

If TireTutor built your website

Your DNS records may sit with TireTutor rather than with you. The website editor does not include DNS records, so you cannot add these three yourself. It manages your site’s own address, not your email. Send the exact record to support instead: the type, the host name, and the value. Take those from the reference. Support publishes the record in your DNS for you.
Support publishes a record you supply. Support does not set up email authentication for you, and does not troubleshoot mail delivery.

Still need help?

Contact support through the contact form, or call 855-400-4521.

Where to get help elsewhere

TireTutor support does not configure these records, and cannot troubleshoot them for you. Take the request above to your own IT provider, or open a case with your email provider. Google and Microsoft both support this for their own customers.

Where to go next

Records and further reading

Exact record values, plain-word definitions, and the official articles.

Overview

What these records protect, and what goes wrong without them.

Your website

What the website editor covers, and who on your team can use it.

Managing site settings

Change your logo, colours, tracking details, and form recipients.