smtp.polygroup.com服务器iP：
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历史解析记录：
2023-10-29-----2025-04-25 47.246.146.57
2023-10-29-----2025-04-25 47.246.99.196
2023-10-29-----2025-04-25 47.246.165.89
2025-04-25-----2025-04-25 47.246.137.45
2023-10-29-----2024-05-28 47.246.64.75
2021-05-05-----2021-05-05 42.120.226.6
2021-05-05-----2021-05-05 140.205.80.34
2021-05-05-----2021-05-05 140.205.106.67
2021-05-05-----2021-05-05 42.120.158.7
2021-05-05-----2021-05-05 42.120.214.8
2021-05-05-----2021-05-05 42.156.140.5
2021-05-05-----2021-05-05 47.89.74.66
2021-05-05-----2021-05-05 140.205.106.68
2019-11-12-----2019-11-12 183.232.104.133