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According to Live Direct Marketing's daily DNS scan (July 12, 2026), certum.pl (Tranco rank #6,188) receives mail via Microsoft 365. Its DMARC policy is p=quarantine — one of the minority (47%) of DMARC publishers that actually enforce.
| Mailbox provider (MX) | Microsoft 365 |
|---|---|
| ESPs in SPF | none detected |
| SaaS senders in SPF | none detected |
| DMARC policy | p=quarantine |
| DMARC record | v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:dmarc@assecodspl.uriports.com; ruf=mailto:dmarc@assecodspl.uriports.com; fo=1:d:s |
| Tranco rank | #6,188 |
| Snapshot | 2026-07-12 (updated daily) |
certum.pl uses Microsoft 365 for inbound mail (detected from its primary MX record) as of July 12, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
Partially — certum.pl publishes p=quarantine (as of July 12, 2026).