古いサーバのclamav-daemonが止まってた。 lv /var/log/mail.info Apr 16 06:39:38 localhost postfix/smtp[22857]: 〜〜〜, relay=localhost[127.0.0.1], delay=1497, status=deferred (host localhost[127.0.0.1] said: 451 Local Error (in reply to end …