qmailctl stat
authlib: up (pid 2464) 48 seconds
clamd: up (pid 4296) 1 seconds
imap4: up (pid 2463) 48 seconds
imap4-ssl: up (pid 2471) 48 seconds
pop3: up (pid 2461) 48 seconds
pop3-ssl: up (pid 2458) 48 seconds
send: up (pid 2460) 48 seconds
smtp: up (pid 2453) 48 seconds
smtp-ssl: up (pid 2455) 48 seconds
spamd: up (pid 2456) 48 seconds
submission: up (pid 2454) 48 seconds
authlib/log: up (pid 2457) 48 seconds
clamd/log: up (pid 2447) 48 seconds
imap4/log: up (pid 2469) 48 seconds
imap4-ssl/log: up (pid 2470) 48 seconds
pop3/log: up (pid 2462) 48 seconds
pop3-ssl/log: up (pid 2468) 48 seconds
send/log: up (pid 2459) 48 seconds
smtp/log: up (pid 2444) 48 seconds
smtp-ssl/log: up (pid 2472) 48 seconds
spamd/log: up (pid 2466) 48 seconds
submission/log: up (pid 2465) 48 seconds
What's wrong - the only solution is reboot the server.
supervise: fatal: unable to acquire log/supervise/lock: temporary failure
supervise: fatal: unable to acquire clamd/supervise/lock: temporary failure