Thanks for the log. On Oct 1st, you had a number of errors related to socket connections (TCP/IP connections) to your server:
[Sat Oct-01-2016 14:12:41.934][b62cf000][1377384] FTPClient.cpp:474 TCPSocket::connect() failed, waiting and trying again
[Sat Oct-01-2016 14:12:42.975][b62cf000][1377480] FTPClient.cpp:474 TCPSocket::connect() failed, waiting and trying again
[Sat Oct-01-2016 14:12:44.014][b62cf000][1377544] FTPClient.cpp:474 TCPSocket::connect() failed, waiting and trying again
[Sat Oct-01-2016 14:12:45.049][b62cf000][1378128] FTPClient.cpp:481 TCPSocket::connect() failed permanently
[Sat Oct-01-2016 14:12:45.049][b62cf000][1378128] FTPClient.cpp:712 FTPClient::open(): Could not make connection to server
Later you had some Ingest errors because files that Ingest thought existed no longer existed by the time Ingest tried to copy them.
And after that, your DNS wasn't working correctly:
[Sat Oct-01-2016 14:58:25.211][b62cf000][1610212] FTPClient.cpp:835 FTPClient::getresp(): Server responded with transient error
[Sat Oct-01-2016 17:51:32.477][c084b000][2464948] FTPClient.cpp:406 ERROR: gethostbyname(pressefotoeibner.de) failed
[Sat Oct-01-2016 17:51:32.478][c084b000][2465208] FTPClient.cpp:712 FTPClient::open(): Could not make connection to server
These are likely transient errors that are unrelated to any specific Mac OS X version.
-Kirk