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According to Live Direct Marketing's daily DNS scan (July 13, 2026), dnb.com (Tranco rank #6,461) receives mail via Microsoft 365 and sends through Salesforce, SendGrid (Twilio), Alibaba DirectMail. Its DMARC policy is p=reject — one of the minority (47%) of DMARC publishers that actually enforce.
| Mailbox provider (MX) | Microsoft 365 |
|---|---|
| ESPs in SPF | Salesforce, SendGrid (Twilio), Alibaba DirectMail |
| SaaS senders in SPF | none detected |
| DMARC policy | p=reject |
| DMARC record | v=DMARC1;p=reject;pct=100;fo=1;ruf=mailto:dmarc_afrf@auth.returnpath.net;rua=mailto:dmarc_agg@auth.returnpath.net |
| Tranco rank | #6,461 |
| Snapshot | 2026-07-13 (updated daily) |
dnb.com uses Microsoft 365 for inbound mail (detected from its primary MX record) as of July 13, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
dnb.com authorises Salesforce, SendGrid (Twilio), Alibaba DirectMail in its SPF record as of July 13, 2026.
Yes — dnb.com publishes p=reject, the strictest DMARC policy (as of July 13, 2026).