currupt folder structure --> INBOX 1 1 1 1 1

[Thorben Hemmler]

Hi all!

I´ve got a problem with some (not all) of my mailboxes. If you see, some
folders got strange names.

41943652 4.0K drwx------   3 vmail vmail 4.0K Mar 25 10:42 INBOX 1
42205306 4.0K drwx------   3 vmail vmail 4.0K Mar 25 10:46 INBOX 1 1
42336882 4.0K drwx------   3 vmail vmail 4.0K Mar 25 10:48 INBOX 1 1 1
42337295 4.0K drwx------   3 vmail vmail 4.0K Mar 25 10:49 INBOX 1 1 1 1
42598861 4.0K drwx------   3 vmail vmail 4.0K Mar 25 10:51 INBOX 1 1 1 1 1
42730114 4.0K drwx------   3 vmail vmail 4.0K Mar 25 10:54 INBOX 1 1 1 1 1 1
42730261 4.0K drwx------   3 vmail vmail 4.0K Mar 25 10:57 INBOX 1 1 1 1 1 1
1
42730276 4.0K drwx------   3 vmail vmail 4.0K Mar 25 10:57 INBOX 1 1 1 1 1 1
1 1
42730291 4.0K drwx------   3 vmail vmail 4.0K Mar 25 10:58 INBOX 1 1 1 1 1 1
1 1 1
42730306 4.0K drwx------   3 vmail vmail 4.0K Mar 25 10:59 INBOX 1 1 1 1 1 1
1 1 1 1
42730321 4.0K drwx------   3 vmail vmail 4.0K Mar 25 11:00 INBOX 1 1 1 1 1 1
1 1 1 1 1
42730336 4.0K drwx------   3 vmail vmail 4.0K Mar 25 11:01 INBOX 1 1 1 1 1 1
1 1 1 1 1 1
42730351 4.0K drwx------   3 vmail vmail 4.0K Mar 25 11:02 INBOX 1 1 1 1 1 1
1 1 1 1 1 1 1
42730366 4.0K drwx------   3 vmail vmail 4.0K Mar 25 11:03 INBOX 1 1 1 1 1 1
1 1 1 1 1 1 1 1
42730381 4.0K drwx------   3 vmail vmail 4.0K Mar 25 11:04 INBOX 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1
42730400 4.0K drwx------   3 vmail vmail 4.0K Mar 25 11:05 INBOX 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1

and so on.....

Any ideas what I´m doing wrong?
Thanks in advance.

Best regards,
Thorben

# 2.2.10: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-504.12.2.el6.x86_64 x86_64 CentOS release 6.6 (Final) 
auth_mechanisms = plain login
disable_plaintext_auth = no
mail_location = mdbox:%h
mail_plugins = quota zlib
mdbox_rotate_size = 10 M
namespace inbox {
  inbox = yes
  location = 
  prefix = 
}
passdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
plugin {
  quota = dict:User quota::file:%h/dovecot-quota
  quota_warning = storage=90%% quota-warning 90 %u
  zlib_save = gz
  zlib_save_level = 6
}
pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
postmaster_address = postmas...@xxxx.xx
service imap-login {
  process_min_avail = 12
  service_count = 0
}
service imap {
  process_limit = 8192
}
service lmtp {
  inet_listener lmtp {
    address = *
    port = 24
  }
}
service pop3-login {
  process_min_avail = 12
  service_count = 0
}
service pop3 {
  process_limit = 1024
}
service quota-warning {
  executable = script /usr/local/scripte/quota-warning.sh
  unix_listener quota-warning {
    user = vmail
  }
  user = vmail
}
ssl = no
userdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
verbose_proctitle = yes
protocol lmtp {
  mail_plugins = quota zlib sieve
}
protocol lda {
  mail_plugins = quota zlib sieve
}
protocol imap {
  mail_max_userip_connections = 30
  mail_plugins = quota zlib imap_quota
}
protocol pop3 {
  mail_plugins = quota zlib
}