Funny how lost I am without my old log files!
Log Files
journalctl = shows all logs from the beginning of the log
journalctl -b = show logs since boot
journalctl -f -n 1000 = show most recent 1000 entries
journalctl -u postfix = shows postfix logs
Combined:
journalctl -u postfix -f -n 1000
Tags: maillog, messages, log files, journald