Dovecot 2 / auth-userdb权限

日志文件中的错误：

userdb lookup: connect(/var/run/dovecot/auth-userdb) failed: Permission denied (euid=5000(vmail) egid=5000(vmail) missing +r perm: /var/run/dovecot/auth-userdb, euid is not dir owner) 

10-master.conf部分：

 service auth { # auth_socket_path points to this userdb socket by default. It's typically # used by dovecot-lda, doveadm, possibly imap process, etc. Its default # permissions make it readable only by root, but you may need to relax these # permissions. Users that have access to this socket are able to get a list # of all usernames and get results of everyone's userdb lookups. unix_listener auth-userdb { #mode = 0600 #user = root #group = root } # Postfix smtp-auth unix_listener /var/spool/postfix/private/auth { mode = 0666 } # Auth process is run as this user. #user = $default_internal_user } service auth-worker { # Auth worker process is run as root by default, so that it can access # /etc/shadow. If this isn't necessary, the user should be changed to # $default_internal_user. #user = root } 

/ var / run / dovecot目录的权限：

 drwxr-xr-x. 4 root dovecot 4096 Jan 10 14:00 dovecot 

并列出/ var / run / dovecot目录：

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 drwxr-xr-x. 4 root dovecot 4096 Jan 10 14:00 . drwxr-xr-x. 14 root root 4096 Jan 10 13:36 .. srw------- 1 root root 0 Jan 10 14:00 anvil srw------- 1 root root 0 Jan 10 14:00 anvil-auth-penalty srw------- 1 root root 0 Jan 10 14:00 auth-client srw------- 1 dovecot root 0 Jan 10 14:00 auth-login srw------- 1 root root 0 Jan 10 14:00 auth-master srw------- 1 root root 0 Jan 10 14:00 auth-userdb srw------- 1 dovecot root 0 Jan 10 14:00 auth-worker srw------- 1 root root 0 Jan 10 14:00 config srw------- 1 root root 0 Jan 10 14:00 dict srw------- 1 root root 0 Jan 10 14:00 director-admin srw------- 1 root root 0 Jan 10 14:00 director-userdb srw-rw-rw- 1 root root 0 Jan 10 14:00 dns-client srw------- 1 root root 0 Jan 10 14:00 doveadm-server lrwxrwxrwx 1 root root 25 Jan 10 14:00 dovecot.conf -> /etc/dovecot/dovecot.conf drwxr-xr-x. 2 root root 4096 Sep 23 15:47 empty srw-rw-rw- 1 root root 0 Jan 9 14:10 lmtp drwxr-x---. 2 root dovenull 4096 Jan 10 14:00 login -rw------- 1 root root 5 Jan 10 14:00 master.pid 

我究竟做错了什么？