Are there problems with the stratum server?
I mine (scrypt) since the beginning of zpool and check my log files every few days.
Now I can not connect to stratum server. I have not changed my hardware or software.

[2016-02-25 11:10:20] Starting Stratum on stratum+tcp://mine.zpool.ca:3433
[2016-02-25 11:10:50] Stratum connection failed: Connection timed out after 30001 milliseconds
[2016-02-25 11:10:50] ...retry after 5 seconds