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SMTP client issued a MAIL FROM command to define the envelope sender address for a message transaction. This begins the message submission phase by specifying the return-path used during delivery. In exposed or honeypot SMTP environments, automated bots commonly set arbitrary or disposable sender addresses during relay testing, spam campaigns, or bulk delivery probing.
| IP Address | Risk | Events | Sessions | Country | ASN | Last Seen |
|---|---|---|---|---|---|---|
| 194.26.192.102 | 95% | 54,364 | 11,476 | 🇳🇱 NL | AS210558 | 2026-03-17 |
| 178.16.54.139 | 92% | 44,573 | 44,503 | 🇳🇱 NL | AS202412 | 2026-03-14 |
| 155.117.232.31 | 96% | 5,285 | 3,357 | 🇺🇸 US | AS399486 | 2026-03-31 |
| 185.93.89.18 | 96% | 3,778 | 3,767 | 🇮🇷 IR | AS213790 | 2026-03-09 |
| 185.241.208.170 | 100% | 2,602 | 1,494 | 🇵🇱 PL | AS210558 | 2026-04-01 |
| 172.94.9.71 | 93% | 1,904 | 1,810 | 🇮🇷 IR | AS213790 | 2026-03-11 |
| 220.80.223.144 | 100% | 1,514 | 1,076 | 🇰🇷 KR | AS4766 | 2026-04-16 |
| 45.178.70.3 | 78% | 1,354 | 918 | 🇦🇷 AR | AS264758 | 2026-04-16 |
| 77.90.185.65 | 83% | 1,259 | 1,079 | 🇮🇷 IR | AS213790 | 2026-04-16 |
| 77.83.39.90 | 88% | 1,121 | 375 | 🇺🇦 UA | AS214940 | 2026-02-22 |
| 102.36.228.187 | 76% | 1,010 | 169 | 🇳🇬 NG | AS328555 | 2026-03-02 |
| 125.17.185.94 | 63% | 968 | 654 | 🇮🇳 IN | AS9498 | 2026-04-16 |
| 91.224.92.177 | 96% | 965 | 772 | 🇬🇧 GB | AS209605 | 2026-04-16 |
| 119.152.102.54 | 63% | 958 | 599 | 🇵🇰 PK | AS58895 | 2026-04-16 |
| 125.20.228.146 | 64% | 924 | 622 | 🇮🇳 IN | AS9498 | 2026-04-16 |
| 45.144.212.199 | 80% | 878 | 275 | 🇺🇦 UA | AS214940 | 2026-04-08 |
| 91.92.240.214 | 90% | 838 | 834 | 🇩🇪 DE | AS202412 | 2026-04-16 |
| 185.93.89.16 | 94% | 827 | 827 | 🇮🇷 IR | AS213790 | 2026-04-14 |
| 158.94.211.108 | 97% | 819 | 89 | 🇺🇸 US | AS202412 | 2026-02-24 |
| 195.250.31.127 | 84% | 812 | 123 | 🇮🇳 IN | AS199404 | 2026-02-21 |