SPF, DKIM, and DMARC are DNS records that help other mail systems verify your messages and reduce the chance of your emails going to spam. This article explains how to set them up for domains that send mail from GARMTECH services.
Where to add these records
- If the domain uses GARMTECH nameservers (
ns1.garmtech.com, ns2.garmtech.com, ns3.garmtech.com), you can edit DNS in Plesk → Websites & Domains → DNS Settings.
- If you use external DNS, add the same TXT records at your DNS provider (Plesk DNS changes won’t apply if your nameservers point elsewhere).
SPF (TXT record)
SPF lists which servers are allowed to send mail for your domain.
- If you send mail only from your GARMTECH mail service/hosting server, a common safe baseline is:
v=spf1 a mx -all
- If you also use other senders (for example Mailchimp, Google Workspace, Microsoft 365), you must include them too (your provider will give you the correct
include: value).
DKIM (TXT record)
DKIM adds a cryptographic signature to outgoing emails.
- If you use hosting mailboxes in Plesk, enable DKIM for the domain in Plesk Mail settings (option name usually includes “DKIM”). Plesk will display the TXT record name/value that you must publish in DNS.
- If you use Business Email (GARMTECH.Email), DKIM is typically provided by the email platform. Use the DKIM record value supplied for your domain (if applicable).
DMARC (TXT record)
DMARC tells receiving servers what to do if SPF/DKIM checks fail and where to send reports.
Start with a monitoring policy first:
v=DMARC1; p=none; rua=mailto:postmaster@example.com; adkim=s; aspf=s
- Replace
postmaster@example.com with a real mailbox you control.
- After you confirm SPF/DKIM are correct, you can move to stricter policies (
quarantine / reject).
After publishing records
- Wait for DNS propagation (usually minutes to a few hours).
- Send a test email to a mailbox outside your domain and check the message headers: SPF/DKIM should show pass.
