主题: Upgrade_040_041 有个bug
and dovecot-mysql.conf (if you use MySQL as backend) should be changed too: 
user_query = SELECT CONCAT("/home/vmail", maildir) AS home, \    "/home/vmail/sieve/%Ld/%Ln/" AS sieve_dir, \    CONCAT('*:bytes=', quota*1048576) AS quota_rule \    FROM mailbox WHERE username='%u' \    AND active='1' AND enable%Ls='1' AND expired >= NOW()少了个斜杠:
SELECT CONCAT("/home/vmail/", maildir) AS home
