yes, every hour or even every 20 minutes such disconnections

[2017-12-11 00:56:33] accepted: 12/12 (100.00%), 447.29 kH/s yay!!!
[2017-12-11 00:56:41] Stratum connection interrupted
[2017-12-11 00:56:41] GPU #0: MSI GTX 1050 Ti, 446.05 kH/s
[2017-12-11 00:56:43] Stratum connect failed: Failed to connect to neoscrypt.mine.zpool.ca port 4233: Connection refused
[2017-12-11 00:56:43] ...retry after 10 seconds
[2017-12-11 00:56:44] GPU #0: waiting for data


and NOW

[2017-12-11 00:58:36] Stratum connection interrupted
[2017-12-11 00:58:36] GPU #0: MSI GTX 1050 Ti, 449.10 kH/s
[2017-12-11 00:58:38] Stratum connect failed: Failed to connect to neoscrypt.mine.zpool.ca port 4233: Connection refused

[2017-12-11 00:58:38] ...retry after 10 seconds
[2017-12-11 00:58:39] GPU #0: waiting for data
[2017-12-11 00:58:42] GPU #0: waiting for data
[2017-12-11 00:58:45] GPU #0: waiting for data
[2017-12-11 00:58:48] GPU #0: waiting for data
[2017-12-11 00:58:50] Stratum connect failed: Failed to connect to neoscrypt.mine.zpool.ca port 4233: Connection refused

[2017-12-11 00:58:50] ...retry after 10 seconds
[2017-12-11 00:58:51] GPU #0: waiting for data
[2017-12-11 00:58:54] GPU #0: waiting for data
[2017-12-11 00:58:57] GPU #0: waiting for data
[2017-12-11 00:59:00] GPU #0: waiting for data
[2017-12-11 00:59:02] Stratum connect failed: Failed to connect to neoscrypt.mine.zpool.ca port 4233: Connection refused

[2017-12-11 00:59:02] ...retry after 10 seconds
[2017-12-11 00:59:03] GPU #0: waiting for data
[2017-12-11 00:59:06] GPU #0: waiting for data
[2017-12-11 00:59:09] GPU #0: waiting for data
[2017-12-11 00:59:12] GPU #0: waiting for data
[2017-12-11 00:59:15] Stratum connect failed: Failed to connect to neoscrypt.mine.zpool.ca port 4233: Connection refused

[2017-12-11 00:59:15] ...retry after 10 seconds

and closed