PowerMTA™ 3.5r16 

Top 10 domains by number of recipients

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Name #Rcpt KBytes #Conn Last Error
stu.sdnu.edu.cn 335 2,213.2 0 2025-07-18 01:16:28 SMTP service unavailable: "450 Too many concurrent connections from your IP [NSjjVjUmCg+CzH5VqdcfZj6exXdCe1SXvKdwFFkXc/4wHNoMSzZdlts= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz2.qq.com (42.194.253.16) while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.16)
zjut.edu.cn 198 1,412.7 0 2025-07-18 01:12:09 Error: connection closed by the remote host while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.16)
zafu.edu.cn 180 1,298.7 0 2025-07-18 01:09:24 SMTP service unavailable: "450 Too many concurrent connections from your IP [ORLs+t4qA9N43zUB50kFd0jJUom5fX0hQaoUU6MDLbnO7aTpuMFJk6g= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz2.qq.com (42.194.253.16) while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.16)
nju.edu.cn 132 927.2 0 2025-07-18 01:14:58 SMTP service unavailable: "450 Too many concurrent connections from your IP [MpV5F2PDAuMbV4gmodUtvM3QfLSHHUdoS/aVVnAmqMGJ8FaF0YVL64s= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz2.qq.com (42.194.253.68) while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.68)
upc.edu.cn 122 882.0 0 2025-07-18 01:10:07 SMTP service unavailable: "450 Too many concurrent connections from your IP [NSjjVjUmCg+CefCx9sPRKCF4XvOSthME3LMyIt8BiEEMcNiPIPBp9KI= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz2.qq.com (42.194.253.68) while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.68)
qdu.edu.cn 76 568.5 0 2025-07-18 01:15:27 Error: connection closed by the remote host while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.16)
yzu.edu.cn 74 499.9 0 2025-07-18 01:12:27 SMTP service unavailable: "450 Too many concurrent connections from your IP [NLAtegSadZQLaIADnMhLXjo/vOtTCNplyt8xxCc/jfDIe39o8WxBdu8= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz2.qq.com (42.194.253.68) while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.68)
ntu.edu.tw 68 529.1 0 2025-07-18 01:10:36 Socket error (pollERR), status = ECONNRESET while connected from server1.weojf.cn (10.0.0.176) to mgw.ntu.edu.tw (140.112.8.25)
jiangnan.edu.cn 64 472.7 0 2025-07-18 01:16:27 Error: connection closed by the remote host while connected from server1.weojf.cn (10.0.0.176) to mxbiz2.qq.com (42.194.253.16)
gdut.edu.cn 60 426.6 0 2025-07-18 01:07:27 SMTP service unavailable: "450 Too many concurrent connections from your IP [NLAtegSadZQLXeHzwBM0sgR5yVBin0tHJBb2hjW7OH5/wk4QHo79tNc= Blocked IP 49.65.97.5]. https://open.work.weixin.qq.com/help2/pc/20064" received from mxbiz1.qq.com (183.47.101.122) while connected from server1.weojf.cn (10.0.0.176) to mxbiz1.qq.com (183.47.101.122)

10 of 3304 domains.

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