All guides
Guide
Understanding mail DNS checks
Keep customer email delivering with healthy SPF, DKIM and DMARC.
Mail DNS checks make sure the records that protect and deliver email are in place for every domain.
Step by step
- 1
Review the mail records
For each domain, see its MX, SPF, DKIM and DMARC records in one place.
- 2
Spot what is missing
ZentraLink highlights a missing SPF or DMARC record that could hurt deliverability.
- 3
Fix and re-check
Correct the record at the provider and run the check again to confirm it is healthy.
Tip: Without SPF and DMARC, others can send email in your domain's name — these checks help you close that gap.