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According to Live Direct Marketing's daily DNS scan (July 13, 2026), blurb.com (Tranco rank #8,907) receives mail via Microsoft 365 and sends through Zendesk. Its DMARC policy is p=none (monitor only) — like the majority of DMARC publishers (53% don't enforce).
| Mailbox provider (MX) | Microsoft 365 |
|---|---|
| ESPs in SPF | Zendesk |
| SaaS senders in SPF | CodeTwo Email Signatures 365, Atlassian (Jira/Confluence) |
| DMARC policy | p=none |
| DMARC record | v=DMARC1; p=none; pct=100; rua=mailto:IT-RUA@blurb.com,mailto:re+355448d71f9d@inbound.dmarcdigests.com; ruf=mailto:IT-RUF@blurb.com |
| Tranco rank | #8,907 |
| Snapshot | 2026-07-13 (updated daily) |
blurb.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.
blurb.com authorises Zendesk in its SPF record as of July 13, 2026.
No — blurb.com publishes p=none, which only monitors and does not block spoofing (as of July 13, 2026).