问Dovecot身份验证失败

EN

# 2.2.33.2 (d6601f4ec): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.21 (92477967)
# OS: Linux 4.15.0-47-generic x86_64 Ubuntu 18.04.2 LTS ext4
auth_mechanisms = plain login
log_path = /var/log/dovecot.log
mail_location = maildir:/var/mail/vhosts/%d/%n/
mail_privileged_group = mail
namespace inbox {
  inbox = yes
  location = 
  mailbox Drafts {
    special_use = \Drafts
  }
  mailbox Junk {
    special_use = \Junk
  }
  mailbox Sent {
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Trash {
    special_use = \Trash
  }
  prefix = 
}
passdb {
  args = /etc/dovecot/deny-users
  deny = yes
  driver = passwd-file
}
passdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
postmaster_address = dev@vietfeir.com
protocols = imap lmtp
service auth-worker {
  user = vmail
}
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0666
    user = postfix
  }
  unix_listener auth-userdb {
    mode = 0600
    user = vmail
  }
  user = dovecot
}
service imap-login {
  inet_listener imap {
    port = 0
  }
  inet_listener imaps {
    port = 993
    ssl = yes
  }
}
service lmtp {
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postfix
    mode = 0600
    user = postfix
  }
}
service pop3-login {
  inet_listener pop3 {
    port = 0
  }
  inet_listener pop3s {
    port = 995
    ssl = yes
  }
}
ssl = required
ssl_cert = 

    INSERT INTO `servermail`.`virtual_users`
  (`domain_id`, `password` , `email`)
VALUES
  ('1', ENCRYPT('*REDACTED*!', CONCAT('$6我的客户端(Bluemail)可以选择普通的或填充的MD5密码。前景似乎只允许简单，所以我认为这可能是问题所在，因为我选择了一个基于SHA的方案。(SHA512 512-地窖), SUBSTRING(SHA(RAND()), -16))), 'dennis@vietfeir.com')