Hi,
after update to Dovecot 2.1.5 (Ubuntu 12.04, dovecot from
https://launchpad.net/~kokelnet/+archive/dovecot21) we are getting a
huge ;-) bunch of log entries about " imap(USERNAME): Warning: Inotify
instance limit for user 5000 (UID vmail)".
At last I did an
echo 512 > /proc/sys/fs/inotify/max_user_instances
but the logentries did appear again after some minutes.
Maybe you have a hint for me? Thank you!
At the bottom my current configuration.
--
Greetings,
Martin Rabl
# 2.1.15: /etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-36-generic x86_64 Ubuntu 12.04.2 LTS
auth_anonymous_username = anonymous
auth_cache_negative_ttl = 1 hours
auth_cache_size = 0
auth_cache_ttl = 1 hours
auth_debug = no
auth_debug_passwords = no
auth_default_realm auth_failure_delay = 2 secs
auth_first_valid_uid = 500
auth_gssapi_hostname auth_krb5_keytab auth_last_valid_uid = 0
auth_master_user_separator = *
auth_mechanisms = plain login
auth_proxy_self auth_realms auth_socket_path = /var/run/dovecot/auth-userdb
auth_ssl_require_client_cert = no
auth_ssl_username_from_cert = no
auth_use_winbind = no
auth_username_chars =
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
auth_username_format = %Lu
auth_username_translation auth_verbose = no
auth_verbose_passwords = no
auth_winbind_helper_path = /usr/bin/ntlm_auth
auth_worker_max_count = 30
base_dir = /var/run/dovecot
config_cache_size = 1 M
debug_log_path default_client_limit = 1000
default_idle_kill = 1 mins
default_internal_user = vmail
default_login_user = vmail
default_process_limit = 100
default_vsz_limit = 256 M
deliver_log_format = msgid=%m: %$
dict {
acl = mysql:/etc/dovecot/dovecot-dict-acl-sql.conf.ext
}
dict_db_config director_doveadm_port = 0
director_mail_servers director_servers director_user_expire = 15 mins
director_username_hash = %u
disable_plaintext_auth = yes
dotlock_use_excl = yes
doveadm_allowed_commands doveadm_password doveadm_proxy_port = 0
doveadm_socket_path = doveadm-server
doveadm_worker_count = 0
dsync_alt_char = _
dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u
-l%{lock_timeout} -n%{namespace}
first_valid_gid = 1
first_valid_uid = 500
hostname imap_capability imap_client_workarounds imap_id_log imap_id_send
imap_idle_notify_interval = 2 mins
imap_logout_format = in=%i out=%o
imap_max_line_length = 64 k
imapc_features imapc_host imapc_list_prefix imapc_master_user
imapc_max_idle_time = 29 mins
imapc_password imapc_port = 143
imapc_rawlog_dir imapc_ssl = no
imapc_ssl_ca_dir imapc_ssl_verify = yes
imapc_user = %u
import_environment = TZ
info_log_path instance_name = dovecot
last_valid_gid = 0
last_valid_uid = 0
lda_mailbox_autocreate = no
lda_mailbox_autosubscribe = no
lda_original_recipient_header libexec_dir = /usr/lib/dovecot
listen = *
lmtp_address_translate lmtp_proxy = no
lmtp_rcpt_check_quota = no
lmtp_save_to_detail_mailbox = no
lock_method = fcntl
log_path = syslog
log_timestamp = "%Y-%m-%d %H:%M:%S "
login_access_sockets login_greeting = Dovecot ready.
login_log_format = %$: %s
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c
login_trusted_networks mail_access_groups = vmail
mail_attachment_dir mail_attachment_fs = sis posix
mail_attachment_hash = %{sha1}
mail_attachment_min_size = 128 k
mail_cache_fields = flags
mail_cache_min_mail_count = 0
mail_chroot mail_debug = no
mail_fsync = optimized
mail_full_filesystem_access = no
mail_gid mail_home mail_location =
maildir:~/Maildir:INBOX=~/Maildir/INBOX:LAYOUT=fs
mail_log_prefix = "%s(%u): "
mail_max_keyword_length = 50
mail_max_lock_timeout = 0
mail_max_userip_connections = 10
mail_never_cache_fields = imap.envelope
mail_nfs_index = no
mail_nfs_storage = no
mail_plugin_dir = /usr/lib/dovecot/modules
mail_plugins mail_prefetch_count = 0
mail_privileged_group = vmail
mail_save_crlf = no
mail_shared_explicit_inbox = yes
mail_temp_dir = /tmp
mail_temp_scan_interval = 1 weeks
mail_uid = vmail
mailbox_idle_check_interval = 30 secs
mailbox_list_index = no
maildir_broken_filename_sizes = no
maildir_copy_with_hardlinks = yes
maildir_stat_dirs = no
maildir_very_dirty_syncs = no
managesieve_client_workarounds managesieve_implementation_string = Dovecot
Pigeonhole
managesieve_logout_format = bytes=%i/%o
managesieve_max_compile_errors = 5
managesieve_max_line_length = 65536
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 imapflags notify
master_user_separator mbox_dirty_syncs = yes
mbox_dotlock_change_timeout = 2 mins
mbox_lazy_writes = yes
mbox_lock_timeout = 5 mins
mbox_md5 = apop3d
mbox_min_index_size = 0
mbox_read_locks = fcntl
mbox_very_dirty_syncs = no
mbox_write_locks = dotlock fcntl
mdbox_preallocate_space = no
mdbox_rotate_interval = 0
mdbox_rotate_size = 2 M
mmap_disable = no
namespace {
disabled = no
hidden = no
ignore_on_failure = no
inbox = no
list = yes
location =
maildir:%%Lh/Maildir/:INDEX=%%Lh/shared-idx/%%u:INBOX=%%Lh/Maildir/INBOX:LAYOUT=fs
prefix = shared/%%u/
separator = /
subscriptions = no
type = shared
}
namespace {
disabled = no
hidden = no
ignore_on_failure = no
inbox = no
list = yes
location = maildir:/srv/vmail/public:LAYOUT=fs
prefix = public/
separator = /
subscriptions = no
type = public
}
namespace inbox {
disabled = no
hidden = no
ignore_on_failure = no
inbox = yes
list = yes
location mailbox Drafts {
auto = no
special_use = \Drafts
}
mailbox Junk {
auto = no
special_use = \Junk
}
mailbox Sent {
auto = no
special_use = \Sent
}
mailbox "Sent Messages" {
auto = no
special_use = \Sent
}
mailbox Trash {
auto = no
special_use = \Trash
}
prefix separator = /
subscriptions = yes
type = private
}
passdb {
args = /etc/dovecot/passwd.masterusers
default_fields deny = no
driver = passwd-file
master = yes
override_fields pass = no
}
passdb {
args = /etc/dovecot/dovecot-ldap.conf.ext
default_fields deny = no
driver = ldap
master = no
override_fields pass = no
}
passdb {
args = /etc/dovecot/dovecot-sql.conf.ext
default_fields deny = no
driver = sql
master = no
override_fields pass = no
}
plugin {
acl = vfile
acl_shared_dict = proxy::acl
autocreate = Trash
autocreate2 = Spam
autocreate3 = Sent
autocreate4 = Drafts
autosubscribe = Trash
autosubscribe2 = Spam
autosubscribe3 = Sent
autosubscribe4 = Drafts
autosubscribe5 = public/Files
autosubscribe6 = public/Groupware
autosubscribe7 = public/EXAMPLE
sieve = ~/.dovecot.sieve
sieve_after = /srv/vmail/sieve/after.sieve
sieve_before = /srv/vmail/sieve/before.sieve
sieve_dir = ~/sieve
sieve_extensions = +notify +imapflags
sieve_global_dir = /srv/vmail/sieve
sieve_global_path = /srv/vmail/sieve/globalsieverc
}
pop3_client_workarounds pop3_enable_last = no
pop3_fast_size_lookups = no
pop3_lock_session = no
pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s
pop3_no_flag_updates = no
pop3_reuse_xuidl = no
pop3_save_uidl = no
pop3_uidl_duplicates = allow
pop3_uidl_format = %08Xu%08Xv
pop3c_host pop3c_master_user pop3c_password pop3c_port = 110
pop3c_rawlog_dir pop3c_ssl = no
pop3c_ssl_ca_dir pop3c_ssl_verify = yes
pop3c_user = %u
postmaster_address = postmaster at EXAMPLE.de
protocols = imap sieve
quota_full_tempfail = yes
recipient_delimiter = +
rejection_reason = Your message to <%t> was automatically rejected:%n%r
rejection_subject = Rejected: %s
replication_full_sync_interval = 12 hours
replication_max_conns = 10
replicator_host = replicator
replicator_port = 0
sendmail_path = /usr/sbin/sendmail
service aggregator {
chroot = .
client_limit = 0
drop_priv_before_exec = no
executable = aggregator
extra_groups fifo_listener replication-notify-fifo {
group mode = 0600
user }
group idle_kill = 0
privileged_group process_limit = 0
process_min_avail = 0
protocol service_count = 0
type unix_listener replication-notify {
group mode = 0600
user }
user = $default_internal_user
vsz_limit = 18446744073709551615 B
}
service anvil {
chroot = empty
client_limit = 0
drop_priv_before_exec = no
executable = anvil
extra_groups group idle_kill = 4294967295 secs
privileged_group process_limit = 1
process_min_avail = 1
protocol service_count = 0
type = anvil
unix_listener anvil-auth-penalty {
group mode = 0600
user }
unix_listener anvil {
group mode = 0600
user }
user = $default_internal_user
vsz_limit = 18446744073709551615 B
}
service auth-worker {
chroot client_limit = 1
drop_priv_before_exec = no
executable = auth -w
extra_groups group idle_kill = 0
privileged_group process_limit = 0
process_min_avail = 0
protocol service_count = 1
type unix_listener auth-worker {
group mode = 0600
user = $default_internal_user
}
user vsz_limit = 18446744073709551615 B
}
service auth {
chroot client_limit = 0
drop_priv_before_exec = no
executable = auth
extra_groups group idle_kill = 0
privileged_group process_limit = 1
process_min_avail = 0
protocol service_count = 0
type unix_listener /var/spool/postfix/private/dovecot-auth {
group = postfix
mode = 0660
user = postfix
}
unix_listener auth-client {
group mode = 0600
user }
unix_listener auth-login {
group mode = 0600
user = $default_internal_user
}
unix_listener auth-master {
group = vmail
mode = 0600
user = vmail
}
unix_listener auth-userdb {
group = vmail
mode = 0600
user = vmail
}
unix_listener login/login {
group mode = 0666
user }
user = $default_internal_user
vsz_limit = 18446744073709551615 B
}
service config {
chroot client_limit = 0
drop_priv_before_exec = no
executable = config
extra_groups group idle_kill = 0
privileged_group process_limit = 0
process_min_avail = 0
protocol service_count = 0
type = config
unix_listener config {
group mode = 0600
user }
user vsz_limit = 18446744073709551615 B
}
service dict {
chroot client_limit = 1
drop_priv_before_exec = no
executable = dict
extra_groups group idle_kill = 0
privileged_group process_limit = 0
process_min_avail = 0
protocol service_count = 0
type unix_listener dict {
group = vmail
mode = 0660
user = vmail
}
user = $default_internal_user
vsz_limit = 18446744073709551615 B
}
service director {
chroot = .
client_limit = 0
drop_priv_before_exec = no
executable = director
extra_groups fifo_listener login/proxy-notify {
group mode = 00
user }
group idle_kill = 4294967295 secs
inet_listener {
address port = 0
ssl = no
}
privileged_group process_limit = 1
process_min_avail = 0
protocol service_count = 0
type unix_listener director-admin {
group mode = 0600
user }
unix_listener director-userdb {
group mode = 0600
user }
unix_listener login/director {
group mode = 00
user }
user = $default_internal_user
vsz_limit = 18446744073709551615 B
}
service dns_client {
chroot client_limit = 1
drop_priv_before_exec = no
executable = dns-client
extra_groups group idle_kill = 0
privileged_group process_limit = 0
process_min_avail = 0
protocol service_count = 0
type unix_listener dns-client {
group mode = 0666
user }
unix_listener login/dns-client {
group mode = 0666
user }
user = $default_internal_user
vsz_limit = 18446744073709551615 B
}
service doveadm {
chroot client_limit = 1
drop_priv_before_exec = no
executable = doveadm-server
extra_groups group idle_kill = 0
privileged_group process_limit = 0
process_min_avail = 0
protocol service_count = 1
type unix_listener doveadm-server {
group mode = 0600
user }
user vsz_limit = 18446744073709551615 B
}
service imap-login {
chroot = login
client_limit = 0
drop_priv_before_exec = no
executable = imap-login
extra_groups group idle_kill = 0
inet_listener imap {
address port = 143
ssl = no
}
inet_listener imaps {
address port = 993
ssl = yes
}
privileged_group process_limit = 0
process_min_avail = 0
protocol = imap
service_count = 1
type = login
user = $default_login_user
vsz_limit = 18446744073709551615 B
}
service imap {
chroot client_limit = 1
drop_priv_before_exec = no
executable = imap
extra_groups group idle_kill = 0
privileged_group process_limit = 2048
process_min_avail = 0
protocol = imap
service_count = 1
type unix_listener login/imap {
group mode = 0666
user }
user vsz_limit = 18446744073709551615 B
}
service indexer-worker {
chroot client_limit = 1
drop_priv_before_exec = no
executable = indexer-worker
extra_groups group idle_kill = 0
privileged_group process_limit = 10
process_min_avail = 0
protocol service_count = 0
type unix_listener indexer-worker {
group mode = 0600
user = $default_internal_user
}
user vsz_limit = 18446744073709551615 B
}
service indexer {
chroot client_limit = 0
drop_priv_before_exec = no
executable = indexer
extra_groups group idle_kill = 0
privileged_group process_limit = 1
process_min_avail = 0
protocol service_count = 0
type unix_listener indexer {
group mode = 0666
user }
user = $default_internal_user
vsz_limit = 18446744073709551615 B
}
service ipc {
chroot = empty
client_limit = 0
drop_priv_before_exec = no
executable = ipc
extra_groups group idle_kill = 0
privileged_group process_limit = 1
process_min_avail = 0
protocol service_count = 0
type unix_listener ipc {
group mode = 0600
user }
unix_listener login/ipc-proxy {
group mode = 0600
user = $default_login_user
}
user = $default_internal_user
vsz_limit = 18446744073709551615 B
}
service lmtp {
chroot client_limit = 1
drop_priv_before_exec = no
executable = lmtp
extra_groups group idle_kill = 0
privileged_group process_limit = 0
process_min_avail = 0
protocol = lmtp
service_count = 0
type unix_listener lmtp {
group mode = 0666
user }
user vsz_limit = 18446744073709551615 B
}
service log {
chroot client_limit = 0
drop_priv_before_exec = no
executable = log
extra_groups group idle_kill = 4294967295 secs
privileged_group process_limit = 1
process_min_avail = 0
protocol service_count = 0
type = log
unix_listener log-errors {
group mode = 0600
user }
user vsz_limit = 18446744073709551615 B
}
service managesieve-login {
chroot = login
client_limit = 0
drop_priv_before_exec = no
executable = managesieve-login
extra_groups group idle_kill = 0
inet_listener sieve {
address port = 4190
ssl = no
}
inet_listener sieve_deprecated {
address port = 2000
ssl = no
}
privileged_group process_limit = 0
process_min_avail = 0
protocol = sieve
service_count = 1
type = login
user = $default_login_user
vsz_limit = 18446744073709551615 B
}
service managesieve {
chroot client_limit = 1
drop_priv_before_exec = no
executable = managesieve
extra_groups group idle_kill = 0
privileged_group process_limit = 0
process_min_avail = 0
protocol = sieve
service_count = 1
type unix_listener login/sieve {
group mode = 0666
user }
user vsz_limit = 18446744073709551615 B
}
service pop3-login {
chroot = login
client_limit = 0
drop_priv_before_exec = no
executable = pop3-login
extra_groups group idle_kill = 0
inet_listener pop3 {
address port = 110
ssl = no
}
inet_listener pop3s {
address port = 995
ssl = yes
}
privileged_group process_limit = 0
process_min_avail = 0
protocol = pop3
service_count = 1
type = login
user = $default_login_user
vsz_limit = 18446744073709551615 B
}
service pop3 {
chroot client_limit = 1
drop_priv_before_exec = no
executable = pop3
extra_groups group idle_kill = 0
privileged_group process_limit = 1024
process_min_avail = 0
protocol = pop3
service_count = 1
type unix_listener login/pop3 {
group mode = 0666
user }
user vsz_limit = 18446744073709551615 B
}
service replicator {
chroot client_limit = 0
drop_priv_before_exec = no
executable = replicator
extra_groups group idle_kill = 4294967295 secs
privileged_group process_limit = 1
process_min_avail = 0
protocol service_count = 0
type unix_listener replicator {
group mode = 0600
user = $default_internal_user
}
user vsz_limit = 18446744073709551615 B
}
service ssl-params {
chroot client_limit = 0
drop_priv_before_exec = no
executable = ssl-params
extra_groups group idle_kill = 0
privileged_group process_limit = 0
process_min_avail = 0
protocol service_count = 0
type = startup
unix_listener login/ssl-params {
group mode = 0666
user }
user vsz_limit = 18446744073709551615 B
}
service stats {
chroot = empty
client_limit = 0
drop_priv_before_exec = no
executable = stats
extra_groups fifo_listener stats-mail {
group mode = 0600
user }
group idle_kill = 4294967295 secs
privileged_group process_limit = 1
process_min_avail = 0
protocol service_count = 0
type unix_listener stats {
group mode = 0600
user }
user = $default_internal_user
vsz_limit = 18446744073709551615 B
}
shutdown_clients = yes
ssl = yes
ssl_ca = </etc/ssl/imap.EXAMPLE.de-20110527-20160525.pem
ssl_cert = </etc/ssl/imap.EXAMPLE.de-20110527-20160525.pem
ssl_cert_username_field = commonName
ssl_cipher_list =
ALL:!LOW:!SSLv2:ALL:!aNULL:!ADH:!eNULL:!EXP:RC4+RSA:+HIGH:+MEDIUM
ssl_client_cert ssl_client_key ssl_crypto_device ssl_key =
</etc/ssl/imap.EXAMPLE.de-20110527-20160525.pem
ssl_key_password ssl_parameters_regenerate = 1 weeks
ssl_protocols = !SSLv2
ssl_require_crl = yes
ssl_verify_client_cert = no
stats_command_min_time = 1 mins
stats_domain_min_time = 12 hours
stats_ip_min_time = 12 hours
stats_memory_limit = 16 M
stats_session_min_time = 15 mins
stats_user_min_time = 1 hours
submission_host syslog_facility = mail
userdb {
args = /etc/dovecot/dovecot-sql.conf.ext
default_fields driver = sql
override_fields }
valid_chroot_dirs verbose_proctitle = no
verbose_ssl = no
version_ignore = no
protocol imap {
imap_client_workarounds = delay-newmail tb-lsub-flags tb-lsub-flags
tb-extra-mailbox-sep
mail_max_userip_connections = 10
mail_plugins = acl imap_acl autocreate
}
protocol lda {
deliver_log_format = msgid=%m: %$
mail_plugins = sieve autocreate
postmaster_address = postmaster at EXAMPLE.de
quota_full_tempfail = yes
rejection_reason = Your message to <%t> was automatically rejected:%n%r
}
protocol sieve {
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 imapflags
}