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According to Live Direct Marketing's daily DNS scan (July 12, 2026), u-tokyo.ac.jp (Tranco rank #4,548) receives mail via Self-Hosted. Its DMARC policy is p=reject — one of the minority (47%) of DMARC publishers that actually enforce.
| Mailbox provider (MX) | Self-Hosted |
|---|---|
| ESPs in SPF | none detected |
| SaaS senders in SPF | none detected |
| DMARC policy | p=reject |
| DMARC record | v=DMARC1;p=reject;sp=none;rua=mailto:dmarc@momo.nc.u-tokyo.ac.jp |
| Tranco rank | #4,548 |
| Snapshot | 2026-07-12 (updated daily) |
u-tokyo.ac.jp uses Self-Hosted for inbound mail (detected from its primary MX record) as of July 12, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
Yes — u-tokyo.ac.jp publishes p=reject, the strictest DMARC policy (as of July 12, 2026).