fetchmail on OS X to occasionally fetch emails, and since OS X Sierra, I noticed that it’s not quite working.
May 18 15:35:15 hermit fetchmail: getaddrinfo("pop.gmail.com","pop3s") error: nodename nor servname provided, or not known
It turns out OS X has sandboxing mechanism for applications, esp. daemons. I have not found the complete information yet, but for now running
--nodetach mode seems to do the job.