linode.com has excellent email authentication. All SPF, DKIM, and DMARC records are properly configured.
| SPF (Sender Policy Framework) | pass |
| DKIM (DomainKeys Identified Mail) | pass |
| DMARC (Domain-based Message Authentication) | pass |
| MX (Mail Exchange Records) | pass |
| Blacklist Status | pass |
v=spf1 a:outbound.mail.linode.com include:sendersv4b.mail.linode.com include:_spf.google.com include:mktomail.com include:spf-009e7401.pphosted.com ip4:52.71.30.102 ip4:97.107.141.36 ip6:2600:3c03::f03c:91ff:fe6e:fda0 ip4:66.175.208.40 ip6:2600:3c03:e000:af2::1 ip4:173.255.198.11 ip4:66.175.211.242 ip6:2600:3c00:e000:07e9::1 ip6:2600:3c03:e000:bfc::1 ip4:67.231.149.131 ip4:67.231.157.127 ip6:2620:100:9001:583::1 ip6:2620:100:9005:57f::1 -all
v=DMARC1; p=reject; sp=quarantine; pct=100; rua=mailto:813b13d662ad87bb7b1b73ca4a1da967-d@dmarc.report-uri.com
No issues found. All email authentication records are properly configured.
Email authentication (SPF, DKIM, DMARC) verifies that emails claiming to be from linode.com actually come from authorized servers. Without proper authentication, emails may be marked as spam or rejected by receiving servers like Gmail, Outlook, and Yahoo.
Since February 2024, Google and Yahoo require SPF, DKIM, and DMARC for all email senders. Domains without these records see significantly higher spam rates.
Use our step-by-step setup guides to configure the missing records at your DNS provider. After making changes, re-scan linode.com to verify the fix.