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SMTP client supplied felicitous.monitoring.internet-measurement.co as the EHLO/HELO argument, indicating activity from an internet measurement or research scanning platform. Such identifiers are typically used by large-scale telemetry projects to enumerate exposed services, collect capability data, and assess protocol support. While generally non-exploitative, this primitive represents automated reconnaissance against the SMTP service.
| IP Address | Risk | Events | Sessions | Country | ASN | Last Seen |
|---|---|---|---|---|---|---|
| 87.236.176.103 | 92% | 386 | 335 | 🇬🇧 GB | AS211298 | 2026-03-21 |
| 2a06:4882:5000::67 | 59% | 135 | 109 | 🇬🇧 GB | AS211298 | 2026-03-19 |