> Periksa ke screening log untuk cari tahu kenapa koneksi ditolak.

di screening log saya hanya menemukan log semacam ini, Pak :

Mon 2019-08-05 12:31:36.197: Dynamic screening refused connection to
10.0.0.1:25 from 185.137.111.200; 1094 minutes remain
Mon 2019-08-05 12:31:36.197: ----------
Mon 2019-08-05 12:31:52.720: Dynamic screening refused connection to
10.0.0.1:587 from 10.0.0.74; 1353 minutes remain
Mon 2019-08-05 12:31:52.720: ----------
Mon 2019-08-05 12:31:53.564: Dynamic screening refused connection to
10.0.0.1:587 from 10.0.0.42; 1353 minutes remain
Mon 2019-08-05 12:31:53.564: ----------
Mon 2019-08-05 12:31:54.408: Dynamic screening refused connection to
10.0.0.1:587 from 10.0.0.116; 1353 minutes remain
Mon 2019-08-05 12:31:54.409: ----------
Mon 2019-08-05 12:31:56.387: Dynamic screening refused connection to
10.0.0.1:25 from 185.137.111.5; 1094 minutes remain
Mon 2019-08-05 12:31:56.387: ----------
Mon 2019-08-05 12:31:57.814: Dynamic screening refused connection to
10.0.0.1:110 from 10.0.0.74; 1353 minutes remain
Mon 2019-08-05 12:31:57.814: ----------
Mon 2019-08-05 12:31:58.058: Dynamic screening refused connection to
10.0.0.1:587 from 10.0.0.74; 1353 minutes remain
Mon 2019-08-05 12:31:58.058: ----------
Mon 2019-08-05 12:31:58.068: Dynamic screening refused connection to
10.0.0.1:110 from 10.0.0.74; 1353 minutes remain
Mon 2019-08-05 12:31:58.068: ----------
Mon 2019-08-05 12:32:01.222: Dynamic screening refused connection to
10.0.0.1:587 from 10.0.0.46; 1353 minutes remain
Mon 2019-08-05 12:32:01.222: ----------
Mon 2019-08-05 12:32:06.911: Dynamic screening refused connection to
10.0.0.1:587 from 10.0.0.49; 1353 minutes remain
Mon 2019-08-05 12:32:06.911: ----------
Mon 2019-08-05 12:32:12.222: Dynamic screening refused connection to
10.0.0.1:110 from 10.0.0.77; 1353 minutes remain
Mon 2019-08-05 12:32:12.222: ----------
Mon 2019-08-05 12:32:18.519: Dynamic screening refused connection to
10.0.0.1:587 from 10.0.0.90; 1352 minutes remain
Mon 2019-08-05 12:32:18.519: ----------

-- 
Warm Regards,

Anjas
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