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According to Live Direct Marketing's daily DNS scan (July 13, 2026), linode.com (Tranco rank #931) receives mail via Proofpoint and sends through Proofpoint, Marketo (Adobe). Its DMARC policy is p=reject — one of the minority (47%) of DMARC publishers that actually enforce.
| Mailbox provider (MX) | Proofpoint |
|---|---|
| ESPs in SPF | Proofpoint, Marketo (Adobe) |
| SaaS senders in SPF | none detected |
| DMARC policy | p=reject |
| DMARC record | v=DMARC1; p=reject; sp=quarantine; pct=100; rua=mailto:813b13d662ad87bb7b1b73ca4a1da967-d@dmarc.report-uri.com |
| Tranco rank | #931 |
| Snapshot | 2026-07-13 (updated daily) |
linode.com uses Proofpoint for inbound mail (detected from its primary MX record) as of July 13, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
linode.com authorises Proofpoint, Marketo (Adobe) in its SPF record as of July 13, 2026.
Yes — linode.com publishes p=reject, the strictest DMARC policy (as of July 13, 2026).