Проблемы с Dovecot

Jun  7 16:57:15 mail dovecot: pop3(user): Error: Sync failed for mbox file /var/spool/vmail/somedomain/user: Expunged message reappeared to mailbox (UID 3622 < 3641, seq=2, idx_msgs=0)
Jun  7 16:57:15 mail dovecot: pop3(user): Error: Sync failed for mbox file /var/spool/vmail/somedomain/user: Expunged message reappeared to mailbox (UID 3622 < 3641, seq=2, idx_msgs=0)
Jun  7 17:09:47 mail dovecot: pop3(user): Error: Sync failed for mbox file /var/spool/vmail/somedomain/user: Expunged message reappeared to mailbox (UID 3594 < 3666, seq=1, idx_msgs=0)

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
inet_interfaces = all
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
mydestination = localhost
myhostname = mail.somedomain.ru
mynetworks = 127.0.0.0/8, 192.168.100.0/24
myorigin = /etc/mailname
readme_directory = no
recipient_delimiter = +
relayhost =
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP (Debian / GNU)
smtpd_helo_required = yes
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, check_helo_access hash:/etc/postfix/helo.list, check_sender_access hash:/etc/postfix/ext_sender, reject_unauth_destination, reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_non_fqdn_recipient, reject_non_fqdn_sender, reject_non_fqdn_hostname, reject_invalid_hostname
smtpd_sasl_auth_enable = yes
smtpd_sasl_path = private/auth
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = dovecot
virtual_alias_maps = hash:/etc/postfix/virtual
virtual_gid_maps = static:5000
virtual_mailbox_base = /var/spool/vmail/
virtual_mailbox_domains = somedomain.ru
virtual_mailbox_maps = hash:/etc/postfix/vmailbox
virtual_minimum_uid = 100
virtual_uid_maps = static:5000

# 2.1.7: /etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-4-686-pae i686 Debian 7.0 ext4
auth_mechanisms = plain login
base_dir = /var/run/dovecot/
disable_plaintext_auth = no
info_log_path = /var/log/dovecot/info_log
listen = *
mail_gid = 5000
mail_location = mbox:/var/spool/vmail/somedomain:INBOX=/var/spool/vmail/somedomain/%u
mail_privileged_group = vmail
mail_uid = 5000
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 = scheme=CRYPT username_format=%u /etc/dovecot/users
  driver = passwd-file
}
plugin {
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
}
protocols = " imap pop3"
service auth {
  group = postfix
  unix_listener /var/spool/postfix/private/auth {
    mode = 0666
  }
  user = postfix
}
ssl = no
ssl_cert = </etc/dovecot/dovecot.pem
ssl_key = </etc/dovecot/private/dovecot.pem
userdb {
  args = username_format=%u /etc/dovecot/users
  driver = passwd-file
}
valid_chroot_dirs = /var/spool/vmail