[Dovecot] file descriptor errors

[Christian Rößner]

Hi,

I use dovecot 2.2.9 on Gentoo Linux and I get lots of these erors in my log file:

Dec  4 08:53:37 mx dovecot: auth: Error: close failed in file object destructor:
Dec  4 08:53:37 mx dovecot: auth: Error: IOError: [Errno 9] Bad file descriptor

What could cause these error messages?

My mailboxes are stored on an ext4 filesystem:
/dev/vdb1 on /srv/mail type ext4 (rw,noatime)

doveconf -n:
# OS: Linux 3.11.2-hardened x86_64 Gentoo Base System release 2.2 ext4
auth_master_user_separator = *
auth_mechanisms = plain login
auth_verbose = yes
disable_plaintext_auth = no
imap_client_workarounds = tb-extra-mailbox-sep tb-lsub-flags
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
mail_access_groups = mail
mail_attachment_dir = /srv/mail/copymail/attachments
mail_gid = mail
mail_location = maildir:/srv/mail/virtual/%d/%n
mail_plugins = quota acl zlib mail_log notify
mail_privileged_group = mail
mail_uid = vmail
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave
namespace inbox {
 inbox = yes
 location =
 mailbox Drafts {
   auto = subscribe
   special_use = \Drafts
 }
 mailbox Junk-E-Mail {
   auto = subscribe
   special_use = \Junk
 }
 mailbox Junk {
   special_use = \Junk
 }
 mailbox Sent {
   auto = subscribe
   special_use = \Sent
 }
 mailbox "Sent Messages" {
   special_use = \Sent
 }
 mailbox Trash {
   auto = subscribe
   special_use = \Trash
 }
 prefix = INBOX.
}
passdb {
 args = /usr/local/sbin/ispcp-decrypt.py
 driver = checkpassword
}
plugin {
 acl = vfile
 acl_shared_dict = file:/srv/mail/virtual/shared-mailboxes.db
 quota = dict:User quota::file:/srv/mail/virtual/%d/%n/dovecot-quota
 quota_rule = *:storage=300M:messages=20000
 quota_status_nouser = DUNNO
 quota_status_overquota = 552 5.2.2 Mailbox is full
 quota_status_success = DUNNO
 quota_warning = storage=95%% quota-warning 95 %u
 quota_warning2 = storage=80%% quota-warning 80 %u
 sieve = ~/.dovecot.sieve
 sieve_dir = ~/sieve
 zlib_save = gz
 zlib_save_level = 6
}
postmaster_address = postmaster at deltaweb.de
protocols = imap pop3 lmtp sieve
service auth-worker {
 extra_groups = ssl-cert
 unix_listener auth-worker {
   mode = 0600
   user = vmail
 }
 user = vmail
}
service auth {
 extra_groups = ssl-cert
 unix_listener /var/spool/postfix.relay/private/auth {
   group = postfix
   mode = 0660
   user = postfix
 }
 unix_listener /var/spool/postfix/private/auth {
   group = postfix
   mode = 0660
   user = postfix
 }
 unix_listener auth-userdb {
   mode = 0660
   user = vmail
 }
 user = vmail
}
service config {
 unix_listener config {
   mode = 0600
   user = vmail
 }
}
service dict {
 unix_listener dict {
   mode = 0600
   user = vmail
 }
}
service imap-login {
 inet_listener imaps {
   port = 993
   ssl = yes
 }
}
service lmtp {
 inet_listener lmtp {
   address = ::1
   port = 24
 }
}
service managesieve-login {
 inet_listener sieve {
   port = 4190
 }
 inet_listener sieve_deprecated {
   port = 2000
 }
}
service pop3-login {
 inet_listener pop3s {
   port = 995
   ssl = yes
 }
}
service quota-status {
 client_limit = 1
 executable = quota-status -p postfix
 inet_listener {
   port = 12340
 }
}
service quota-warning {
 executable = script /usr/local/bin/quota-warning.sh
 unix_listener quota-warning {
   user = vmail
 }
 user = dovecot
}
ssl_cert = </etc/ssl/certs/mx_deltaweb_de.crt
ssl_key = </etc/ssl/private/mx_deltaweb_de.key
userdb {
 args = /etc/dovecot/dovecot-sql.conf.ext
 driver = sql
}
protocol lmtp {
 mail_plugins = quota acl zlib mail_log notify sieve
}
protocol lda {
 mail_plugins = quota acl zlib mail_log notify sieve
}
protocol imap {
 mail_max_userip_connections = 50
 mail_plugins = quota acl zlib mail_log notify imap_quota imap_acl imap_zlib
}

Thanks in advance

-Christian Rößner

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