收到这样的错误后，Dovecot maillog 无法运行，有解决方案吗？为了使电子邮件顺利运行，只有 maillog 不起作用，我尝试重新启动 postfix 和 dovecot，并重新启动 vps 仍然一样
Nov 6 09:58:24 server1 postfix/postfix-script[655752]: stopping the Postfix mail system
Nov 6 09:58:24 server1 postfix/master[655529]: terminating on signal 15 Nov 6 09:58:27 server1 opendkim[511]: OpenDKIM Filter: mi_stop=1
Nov 6 09:58:27 server1 opendkim[511]: OpenDKIM Filter v2.11.0 terminating with status 0, errno = 0
Nov 6 09:58:27 server1 dovecot: anvil: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
Nov 6 09:58:27 server1 dovecot: stats: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
Nov 6 09:58:27 server1 dovecot: pop3-login: Error: read(anvil) failed: EOF
Nov 6 09:58:27 server1 dovecot: pop3-login: Error: net_connect_unix(/var/run/dovecot/stats-writer) failed: No such file or directory
Nov 6 09:58:27 server1 dovecot: pop3-login: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
Nov 6 09:58:27 server1 dovecot: config: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
Nov 6 09:58:27 server1 dovecot: log(655591): Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
Nov 6 09:58:27 server1 dovecot: log(655591): Warning: Shutting down logging for 'imap-login: ' with 1 clients
Nov 6 09:58:27 server1 dovecot: log(655591): Warning: Shutting down logging for 'imap: ' with 1 clients
Nov 6 09:58:27 server1 dovecot: log(655591): Warning: Shutting down logging for 'pop3-login: ' with 2 clients
Nov 6 09:58:27 server1 dovecot: log(655591): Warning: Shutting down logging for 'pop3: ' with 2 clients
Nov 6 09:58:35 server1 spamd[647]: spamd: server killed by SIGTERM, shutting down
