--On 22 November 2016 23:08 +1100 Bron Gondwana via Cyrus-devel <cyrus-devel@lists.andrew.cmu.edu> wrote:
Yes, it's definitely safe to delete wheneven the server is shut down. We remove it as part of the startup script at FastMail, just in case something crashed. Both sync_server and sync_client will create it if necessary. You can probably remove it safely, but if Cyrus is running and using replication there is a theoretical probability that a new process will start up with that PID and decide to use the directory!
Ok, thanks for the replies - I'll remove them next time we restart the service [to be safe]...
Cheers, -Karl