4 min read · Last updated 18 July 2026
Every mailbox on our servers is filtered by default. Tuning SPF, DKIM and DMARC records improves both what reaches you and whether your own mail gets delivered.
Authentication records
- SPF declares which servers may send mail for your domain.
- DKIM cryptographically signs your outgoing mail.
- DMARC tells receiving servers what to do when SPF or DKIM fails.
We configure all three when we set up your hosting. If you send mail through a third-party platform such as a newsletter tool, open a ticket so we can add it to your SPF record.
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