Problem with mail_uid

[ratatouille]

Hello!

I have problems fetching mail for a system user. In use is a passwd-file.

If I set (for virtual users)
mail_uid = vmail
mail_gid = vmail
in 10-mail.conf, I get permission denied.

2020-03-23 18:39:23 imap(andreas at dualbit.de): Error: chdir(/home/andreas/Maildir/) failed: Permission denied (euid=5000(vmail) egid=5000(vmail) missing +x perm: /home/andreas/Maildir, dir owned by 5006:5006 mode=0700)

The mailbox has permissions drwx------. 9 andreas susers
If I don't set mail_uid I get an error because of missing mail_uid.

I can only access the users mailbox if I set
mail_uid = 5006 in 10-mail.conf

On another system I don't haver this problem. I made diffs, read alot of
stuff and can't find a solution.

What is the way to go, please? I would like to know why this does not work.

Below my doveconf -n

# 2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.24 (124e06aa)
# OS: Linux 3.10.0-1062.9.1.el7.x86_64 x86_64 CentOS Linux release 7.7.1908 (Core)
# Hostname: dualbit1.dualbit.de
auth_debug = yes
auth_debug_passwords = yes
auth_mechanisms = plain cram-md5
auth_verbose = yes
auth_verbose_passwords = yes
debug_log_path = /var/log/dovecot-debug
disable_plaintext_auth = no
first_valid_uid = 1000
listen = *,[::]
log_path = /var/log/dovecot
log_timestamp = "%Y-%m-%d %H:%M:%S "
mail_gid = vmail
mail_home = /home/%n/Maildir
mail_location = maildir:~/
mail_plugins = " quota"
mail_privileged_group = vmail
mail_uid = 5006
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4fl
ags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext
mbox_write_locks = fcntl
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 =
  separator = /
}
passdb {
  args = /etc/dovecot-sql.conf
  driver = sql
}
passdb {
  args = scheme=CRYPT username_format=%u /etc/dovecot/users
  driver = passwd-file
}
plugin {
  quota = dict:user::file:/var/vmail/%d/%n/.quotausage
  sieve = file:~/sieve;active=~/.dovecot.sieve
}
protocols = imap pop3
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
  unix_listener auth-userdb {
    group = vmail
    mode = 0666
    user = vmail
  }
  user = root
}
service imap-login {
  client_limit = 1000
  process_limit = 500
}
service lmtp {
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postfix
    mode = 0600
    user = postfix
  }
}
ssl = required
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key =  # hidden, use -P to show it
ssl_protocols = !SSLv3
userdb {
  driver = prefetch
}
userdb {
  args = /etc/dovecot-sql.conf
  driver = sql
}
userdb {
  args = username_format=%u /etc/dovecot/users
  driver = passwd-file
}
protocol imap {
  mail_plugins = quota imap_quota
}
protocol pop3 {
  mail_plugins = quota
  pop3_uidl_format = %08Xu%08Xv
}
protocol lda {
  mail_plugins = sieve quota
  postmaster_address = root at localhost
}
protocol lmtp {
  mail_plugins = quota sieve
}

Any help appreciated.

  Andreas