mongod.log is being spammed with unknown protocol messages. this message rolls from server to server
we have this issue also but we only have one protocol listed. the thing i'll note is, the protocol is wrapped in quotation marks. see example:
sslVersions = "tls1.2"
sslVersions = tls1.2
the servers are able to talk to each other just fine so i'm having a hard time accepting that the quote marks are causing the problem but i dont see it in any of the examples.