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Topic: [SOLVED] slow connection

Hello,

On a debian install that works well at night, i have several deceleration on days's charge.
Mail.app on osx cannot connect to the mailserver and i cannot connect either on roundecube interface. It also happend sometimes on thunderbird client, but its rarer.

There's 50 users on it and the machine is a 2 x 2,6 GHz and 4go ram. Nothing to note on top process, low charge and low load average.

When that problem occurs with roundecube i have in logs :

Jul 25 17:04:15 mail roundcube: IMAP Error: Login failed for exemple@exemple.com XX.XX.XX.XX. Could not connect to ssl://127.0.0.1:993:  in /usr/share/apache2/roundcubemail-0.5.3/program/include/rcube_imap.php on line 192 (GET /mail/?_task=mail&_remote=1&_action=check-recent&_t=1311606181851&_mbox=INBOX&_list=1&_quota=1&_=1311606181851&_unlock=0)

And it disappears on night connections.

I cannot see foward... and logs doesn't give me much information.

thx for advice,



here's my postconf

2bounce_notice_recipient = postmaster
access_map_defer_code = 450
access_map_reject_code = 554
address_verify_cache_cleanup_interval = 12h
address_verify_default_transport = $default_transport
address_verify_local_transport = $local_transport
address_verify_map = btree:$data_directory/verify_cache
address_verify_negative_cache = yes
address_verify_negative_expire_time = 3d
address_verify_negative_refresh_time = 3h
address_verify_poll_count = ${stress?1}${stress:3}
address_verify_poll_delay = 3s
address_verify_positive_expire_time = 31d
address_verify_positive_refresh_time = 7d
address_verify_relay_transport = $relay_transport
address_verify_relayhost = $relayhost
address_verify_sender = $double_bounce_sender
address_verify_sender_dependent_default_transport_maps = $sender_dependent_default_transport_maps
address_verify_sender_dependent_relayhost_maps = $sender_dependent_relayhost_maps
address_verify_service_name = verify
address_verify_transport_maps = $transport_maps
address_verify_virtual_transport = $virtual_transport
alias_database = hash:/etc/postfix/aliases
alias_maps = hash:/etc/postfix/aliases
allow_mail_to_commands = alias, forward
allow_mail_to_files = alias, forward
allow_min_user = no
allow_percent_hack = yes
allow_untrusted_routing = no
alternate_config_directories = 
always_add_missing_headers = no
always_bcc = 
anvil_rate_time_unit = 60s
anvil_status_update_time = 600s
append_at_myorigin = yes
append_dot_mydomain = no
application_event_drain_time = 100s
authorized_flush_users = static:anyone
authorized_mailq_users = static:anyone
authorized_submit_users = static:anyone
backwards_bounce_logfile_compatibility = yes
berkeley_db_create_buffer_size = 16777216
berkeley_db_read_buffer_size = 131072
best_mx_transport = 
biff = no
body_checks = 
body_checks_size_limit = 51200
bounce_notice_recipient = postmaster
bounce_queue_lifetime = 1d
bounce_service_name = bounce
bounce_size_limit = 50000
bounce_template_file = 
broken_sasl_auth_clients = yes
canonical_classes = envelope_sender, envelope_recipient, header_sender, header_recipient
canonical_maps = 
cleanup_service_name = cleanup
command_directory = /usr/sbin
command_execution_directory = 
command_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
command_time_limit = 1000s
config_directory = /etc/postfix
connection_cache_protocol_timeout = 5s
connection_cache_service_name = scache
connection_cache_status_update_time = 600s
connection_cache_ttl_limit = 2s
content_filter = smtp-amavis:[127.0.0.1]:10024
cyrus_sasl_config_path = 
daemon_directory = /usr/lib/postfix
daemon_timeout = 18000s
data_directory = /var/lib/postfix
debug_peer_level = 2
debug_peer_list = 
default_database_type = hash
default_delivery_slot_cost = 5
default_delivery_slot_discount = 50
default_delivery_slot_loan = 3
default_destination_concurrency_failed_cohort_limit = 1
default_destination_concurrency_limit = 20
default_destination_concurrency_negative_feedback = 1
default_destination_concurrency_positive_feedback = 1
default_destination_rate_delay = 0s
default_destination_recipient_limit = 50
default_extra_recipient_limit = 1000
default_filter_nexthop = 
default_minimum_delivery_slots = 3
default_privs = nobody
default_process_limit = 100
default_rbl_reply = $rbl_code Service unavailable; $rbl_class [$rbl_what] blocked using $rbl_domain${rbl_reason?; $rbl_reason}
default_recipient_limit = 20000
default_recipient_refill_delay = 5s
default_recipient_refill_limit = 100
default_transport = smtp
default_verp_delimiters = +=
defer_code = 450
defer_service_name = defer
defer_transports = 
delay_logging_resolution_limit = 2
delay_notice_recipient = postmaster
delay_warning_time = 0h
deliver_lock_attempts = 20
deliver_lock_delay = 1s
destination_concurrency_feedback_debug = no
detect_8bit_encoding_header = yes
disable_dns_lookups = no
disable_mime_input_processing = no
disable_mime_output_conversion = no
disable_verp_bounces = no
disable_vrfy_command = yes
dont_remove = 0
double_bounce_sender = double-bounce
duplicate_filter_limit = 1000
empty_address_default_transport_maps_lookup_key = <>
empty_address_recipient = MAILER-DAEMON
empty_address_relayhost_maps_lookup_key = <>
enable_original_recipient = no
error_notice_recipient = postmaster
error_service_name = error
execution_directory_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
expand_owner_alias = no
export_environment = TZ MAIL_CONFIG LANG
fallback_transport = 
fallback_transport_maps = 
fast_flush_domains = $relay_domains
fast_flush_purge_time = 7d
fast_flush_refresh_time = 12h
fault_injection_code = 0
flush_service_name = flush
fork_attempts = 5
fork_delay = 1s
forward_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
forward_path = $home/.forward${recipient_delimiter}${extension}, $home/.forward
frozen_delivered_to = yes
hash_queue_depth = 1
hash_queue_names = deferred, defer
header_address_token_limit = 10240
header_checks = 
header_size_limit = 102400
helpful_warnings = yes
home_mailbox = Maildir/
hopcount_limit = 50
html_directory = no
ignore_mx_lookup_error = no
import_environment = MAIL_CONFIG MAIL_DEBUG MAIL_LOGTAG TZ XAUTHORITY DISPLAY LANG=C
in_flow_delay = 1s
inet_interfaces = all
inet_protocols = ipv4
initial_destination_concurrency = 5
internal_mail_filter_classes = 
invalid_hostname_reject_code = 501
ipc_idle = 5s
ipc_timeout = 3600s
ipc_ttl = 1000s
line_length_limit = 2048
lmtp_assume_final = no
lmtp_bind_address = 
lmtp_bind_address6 = 
lmtp_body_checks = 
lmtp_cname_overrides_servername = no
lmtp_connect_timeout = 0s
lmtp_connection_cache_destinations = 
lmtp_connection_cache_on_demand = yes
lmtp_connection_cache_time_limit = 2s
lmtp_connection_reuse_time_limit = 300s
lmtp_data_done_timeout = 600s
lmtp_data_init_timeout = 120s
lmtp_data_xfer_timeout = 180s
lmtp_defer_if_no_mx_address_found = no
lmtp_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit
lmtp_destination_concurrency_limit = $default_destination_concurrency_limit
lmtp_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback
lmtp_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback
lmtp_destination_rate_delay = $default_destination_rate_delay
lmtp_destination_recipient_limit = $default_destination_recipient_limit
lmtp_discard_lhlo_keyword_address_maps = 
lmtp_discard_lhlo_keywords = 
lmtp_enforce_tls = no
lmtp_generic_maps = 
lmtp_header_checks = 
lmtp_host_lookup = dns
lmtp_initial_destination_concurrency = $initial_destination_concurrency
lmtp_lhlo_name = $myhostname
lmtp_lhlo_timeout = 300s
lmtp_line_length_limit = 990
lmtp_mail_timeout = 300s
lmtp_mime_header_checks = 
lmtp_mx_address_limit = 5
lmtp_mx_session_limit = 2
lmtp_nested_header_checks = 
lmtp_pix_workaround_delay_time = 10s
lmtp_pix_workaround_maps = 
lmtp_pix_workaround_threshold_time = 500s
lmtp_pix_workarounds = disable_esmtp,delay_dotcrlf
lmtp_quit_timeout = 300s
lmtp_quote_rfc821_envelope = yes
lmtp_randomize_addresses = yes
lmtp_rcpt_timeout = 300s
lmtp_reply_filter = 
lmtp_rset_timeout = 20s
lmtp_sasl_auth_cache_name = 
lmtp_sasl_auth_cache_time = 90d
lmtp_sasl_auth_enable = no
lmtp_sasl_auth_soft_bounce = yes
lmtp_sasl_mechanism_filter = 
lmtp_sasl_password_maps = 
lmtp_sasl_path = 
lmtp_sasl_security_options = noplaintext, noanonymous
lmtp_sasl_tls_security_options = $lmtp_sasl_security_options
lmtp_sasl_tls_verified_security_options = $lmtp_sasl_tls_security_options
lmtp_sasl_type = cyrus
lmtp_send_xforward_command = no
lmtp_sender_dependent_authentication = no
lmtp_skip_5xx_greeting = yes
lmtp_skip_quit_response = no
lmtp_starttls_timeout = 300s
lmtp_tcp_port = 24
lmtp_tls_CAfile = 
lmtp_tls_CApath = 
lmtp_tls_block_early_mail_reply = no
lmtp_tls_cert_file = 
lmtp_tls_ciphers = export
lmtp_tls_dcert_file = 
lmtp_tls_dkey_file = $lmtp_tls_dcert_file
lmtp_tls_eccert_file = 
lmtp_tls_eckey_file = $lmtp_tls_eccert_file
lmtp_tls_enforce_peername = yes
lmtp_tls_exclude_ciphers = 
lmtp_tls_fingerprint_cert_match = 
lmtp_tls_fingerprint_digest = md5
lmtp_tls_key_file = $lmtp_tls_cert_file
lmtp_tls_loglevel = 0
lmtp_tls_mandatory_ciphers = medium
lmtp_tls_mandatory_exclude_ciphers = 
lmtp_tls_mandatory_protocols = SSLv3, TLSv1
lmtp_tls_note_starttls_offer = no
lmtp_tls_per_site = 
lmtp_tls_policy_maps = 
lmtp_tls_protocols = !SSLv2
lmtp_tls_scert_verifydepth = 9
lmtp_tls_secure_cert_match = nexthop
lmtp_tls_security_level = 
lmtp_tls_session_cache_database = 
lmtp_tls_session_cache_timeout = 3600s
lmtp_tls_verify_cert_match = hostname
lmtp_use_tls = no
lmtp_xforward_timeout = 300s
local_command_shell = 
local_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit
local_destination_concurrency_limit = 2
local_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback
local_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback
local_destination_rate_delay = $default_destination_rate_delay
local_destination_recipient_limit = 1
local_header_rewrite_clients = permit_inet_interfaces
local_initial_destination_concurrency = $initial_destination_concurrency
local_recipient_maps = proxy:unix:passwd.byname $alias_maps
local_transport = local:$myhostname
luser_relay = 
mail_name = Postfix
mail_owner = postfix
mail_release_date = 20100608
mail_spool_directory = /var/mail
mail_version = 2.7.1
mailbox_command = /usr/lib/dovecot/deliver
mailbox_command_maps = 
mailbox_delivery_lock = fcntl, dotlock
mailbox_size_limit = 0
mailbox_transport = 
mailbox_transport_maps = 
mailq_path = /usr/bin/mailq
manpage_directory = /usr/share/man
maps_rbl_domains = 
maps_rbl_reject_code = 554
masquerade_classes = envelope_sender, header_sender, header_recipient
masquerade_domains = 
masquerade_exceptions = 
master_service_disable = 
max_idle = 100s
max_use = 100
maximal_backoff_time = 4000s
maximal_queue_lifetime = 1d
message_reject_characters = 
message_size_limit = 15728640
message_strip_characters = 
milter_command_timeout = 30s
milter_connect_macros = j {daemon_name} v
milter_connect_timeout = 30s
milter_content_timeout = 300s
milter_data_macros = i
milter_default_action = tempfail
milter_end_of_data_macros = i
milter_end_of_header_macros = i
milter_header_checks = 
milter_helo_macros = {tls_version} {cipher} {cipher_bits} {cert_subject} {cert_issuer}
milter_macro_daemon_name = $myhostname
milter_macro_v = $mail_name $mail_version
milter_mail_macros = i {auth_type} {auth_authen} {auth_author} {mail_addr} {mail_host} {mail_mailer}
milter_protocol = 6
milter_rcpt_macros = i {rcpt_addr} {rcpt_host} {rcpt_mailer}
milter_unknown_command_macros = 
mime_boundary_length_limit = 2048
mime_header_checks = $header_checks
mime_nesting_limit = 100
minimal_backoff_time = 300s
multi_instance_directories = 
multi_instance_enable = no
multi_instance_group = 
multi_instance_name = 
multi_instance_wrapper = 
multi_recipient_bounce_reject_code = 550
mydestination = $myhostname, localhost, localhost.localdomain, localhost.$myhostname
mydomain = relationpresse.com
myhostname = mail.relationpresse.com
mynetworks = 127.0.0.0/8, XX.XX.XX.XX
mynetworks_style = subnet
myorigin = mail.relationpresse.com
nested_header_checks = $header_checks
newaliases_path = /usr/bin/newaliases
non_fqdn_reject_code = 504
non_smtpd_milters = 
notify_classes = resource, software
owner_request_special = yes
parent_domain_matches_subdomains = debug_peer_list,fast_flush_domains,mynetworks,permit_mx_backup_networks,qmqpd_authorized_clients,smtpd_access_maps
permit_mx_backup_networks = 
pickup_service_name = pickup
plaintext_reject_code = 450
postmulti_control_commands = reload flush
postmulti_start_commands = start
postmulti_stop_commands = stop abort drain quick-stop
prepend_delivered_header = command, file, forward
process_id_directory = pid
propagate_unmatched_extensions = canonical, virtual
proxy_interfaces = 
proxy_read_maps = $canonical_maps $lmtp_generic_maps $local_recipient_maps $mydestination $mynetworks $recipient_bcc_maps $recipient_canonical_maps $relay_domains $relay_recipient_maps $relocated_maps $sender_bcc_maps $sender_canonical_maps $smtp_generic_maps $smtpd_sender_login_maps $transport_maps $virtual_alias_domains $virtual_alias_maps $virtual_mailbox_domains $virtual_mailbox_maps $smtpd_sender_restrictions
proxy_write_maps = $smtp_sasl_auth_cache_name $lmtp_sasl_auth_cache_name
proxymap_service_name = proxymap
proxywrite_service_name = proxywrite
qmgr_clog_warn_time = 300s
qmgr_fudge_factor = 100
qmgr_message_active_limit = 20000
qmgr_message_recipient_limit = 20000
qmgr_message_recipient_minimum = 10
qmqpd_authorized_clients = 
qmqpd_client_port_logging = no
qmqpd_error_delay = 1s
qmqpd_timeout = 300s
queue_directory = /var/spool/postfix
queue_file_attribute_count_limit = 100
queue_minfree = 0
queue_run_delay = 300s
queue_service_name = qmgr
rbl_reply_maps = 
readme_directory = no
receive_override_options = 
recipient_bcc_maps = proxy:ldap:/etc/postfix/ldap/recipient_bcc_maps_domain.cf, proxy:ldap:/etc/postfix/ldap/recipient_bcc_maps_user.cf
recipient_canonical_classes = envelope_recipient, header_recipient
recipient_canonical_maps = 
recipient_delimiter = +
reject_code = 554
reject_tempfail_action = defer_if_permit
relay_clientcerts = 
relay_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit
relay_destination_concurrency_limit = $default_destination_concurrency_limit
relay_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback
relay_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback
relay_destination_rate_delay = $default_destination_rate_delay
relay_destination_recipient_limit = $default_destination_recipient_limit
relay_domains = $mydestination, proxy:ldap:/etc/postfix/ldap/relay_domains.cf
relay_domains_reject_code = 554
relay_initial_destination_concurrency = $initial_destination_concurrency
relay_recipient_maps = 
relay_transport = relay
relayhost = 
relocated_maps = 
remote_header_rewrite_domain = 
require_home_directory = no
resolve_dequoted_address = yes
resolve_null_domain = no
resolve_numeric_domain = no
rewrite_service_name = rewrite
sample_directory = /usr/share/doc/postfix/examples
send_cyrus_sasl_authzid = no
sender_bcc_maps = proxy:ldap:/etc/postfix/ldap/sender_bcc_maps_domain.cf, proxy:ldap:/etc/postfix/ldap/sender_bcc_maps_user.cf
sender_canonical_classes = envelope_sender, header_sender
sender_canonical_maps = 
sender_dependent_default_transport_maps = 
sender_dependent_relayhost_maps = 
sendmail_path = /usr/sbin/sendmail
service_throttle_time = 60s
setgid_group = postdrop
show_user_unknown_table_name = yes
showq_service_name = showq
smtp_always_send_ehlo = yes
smtp_bind_address = 
smtp_bind_address6 = 
smtp_body_checks = 
smtp_cname_overrides_servername = no
smtp_connect_timeout = 30s
smtp_connection_cache_destinations = 
smtp_connection_cache_on_demand = yes
smtp_connection_cache_time_limit = 2s
smtp_connection_reuse_time_limit = 300s
smtp_data_done_timeout = 600s
smtp_data_init_timeout = 240s
smtp_data_xfer_timeout = 600s
smtp_defer_if_no_mx_address_found = no
smtp_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit
smtp_destination_concurrency_limit = $default_destination_concurrency_limit
smtp_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback
smtp_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback
smtp_destination_rate_delay = $default_destination_rate_delay
smtp_destination_recipient_limit = $default_destination_recipient_limit
smtp_discard_ehlo_keyword_address_maps = 
smtp_discard_ehlo_keywords = 
smtp_enforce_tls = no
smtp_fallback_relay = $fallback_relay
smtp_generic_maps = 
smtp_header_checks = 
smtp_helo_name = $myhostname
smtp_helo_timeout = 300s
smtp_host_lookup = dns
smtp_initial_destination_concurrency = $initial_destination_concurrency
smtp_line_length_limit = 990
smtp_mail_timeout = 300s
smtp_mime_header_checks = 
smtp_mx_address_limit = 5
smtp_mx_session_limit = 2
smtp_nested_header_checks = 
smtp_never_send_ehlo = no
smtp_pix_workaround_delay_time = 10s
smtp_pix_workaround_maps = 
smtp_pix_workaround_threshold_time = 500s
smtp_pix_workarounds = disable_esmtp,delay_dotcrlf
smtp_quit_timeout = 300s
smtp_quote_rfc821_envelope = yes
smtp_randomize_addresses = yes
smtp_rcpt_timeout = 300s
smtp_reply_filter = 
smtp_rset_timeout = 20s
smtp_sasl_auth_cache_name = 
smtp_sasl_auth_cache_time = 90d
smtp_sasl_auth_enable = no
smtp_sasl_auth_soft_bounce = yes
smtp_sasl_mechanism_filter = 
smtp_sasl_password_maps = 
smtp_sasl_path = 
smtp_sasl_security_options = noplaintext, noanonymous
smtp_sasl_tls_security_options = $smtp_sasl_security_options
smtp_sasl_tls_verified_security_options = $smtp_sasl_tls_security_options
smtp_sasl_type = cyrus
smtp_send_xforward_command = no
smtp_sender_dependent_authentication = no
smtp_skip_5xx_greeting = yes
smtp_skip_quit_response = yes
smtp_starttls_timeout = 300s
smtp_tls_CAfile = 
smtp_tls_CApath = 
smtp_tls_block_early_mail_reply = no
smtp_tls_cert_file = 
smtp_tls_ciphers = export
smtp_tls_dcert_file = 
smtp_tls_dkey_file = $smtp_tls_dcert_file
smtp_tls_eccert_file = 
smtp_tls_eckey_file = $smtp_tls_eccert_file
smtp_tls_enforce_peername = yes
smtp_tls_exclude_ciphers = 
smtp_tls_fingerprint_cert_match = 
smtp_tls_fingerprint_digest = md5
smtp_tls_key_file = $smtp_tls_cert_file
smtp_tls_loglevel = 0
smtp_tls_mandatory_ciphers = medium
smtp_tls_mandatory_exclude_ciphers = 
smtp_tls_mandatory_protocols = SSLv3, TLSv1
smtp_tls_note_starttls_offer = no
smtp_tls_per_site = 
smtp_tls_policy_maps = 
smtp_tls_protocols = !SSLv2
smtp_tls_scert_verifydepth = 9
smtp_tls_secure_cert_match = nexthop, dot-nexthop
smtp_tls_security_level = 
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_tls_session_cache_timeout = 3600s
smtp_tls_verify_cert_match = hostname
smtp_use_tls = no
smtp_xforward_timeout = 300s
smtpd_authorized_verp_clients = $authorized_verp_clients
smtpd_authorized_xclient_hosts = 
smtpd_authorized_xforward_hosts = 
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
smtpd_client_connection_count_limit = 50
smtpd_client_connection_rate_limit = 0
smtpd_client_event_limit_exceptions = ${smtpd_client_connection_limit_exceptions:$mynetworks}
smtpd_client_message_rate_limit = 0
smtpd_client_new_tls_session_rate_limit = 0
smtpd_client_port_logging = no
smtpd_client_recipient_rate_limit = 0
smtpd_client_restrictions = 
smtpd_command_filter = 
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_delay_open_until_valid_rcpt = yes
smtpd_delay_reject = yes
smtpd_discard_ehlo_keyword_address_maps = 
smtpd_discard_ehlo_keywords = 
smtpd_end_of_data_restrictions = 
smtpd_enforce_tls = no
smtpd_error_sleep_time = 1s
smtpd_etrn_restrictions = 
smtpd_expansion_filter = \t\40!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~
smtpd_forbidden_commands = CONNECT GET POST
smtpd_hard_error_limit = ${stress?1}${stress:20}
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks,permit_sasl_authenticated, check_helo_access pcre:/etc/postfix/helo_access.pcre
smtpd_history_flush_threshold = 100
smtpd_junk_command_limit = ${stress?1}${stress:100}
smtpd_milters = 
smtpd_noop_commands = 
smtpd_null_access_lookup_key = <>
smtpd_peername_lookup = yes
smtpd_policy_service_max_idle = 300s
smtpd_policy_service_max_ttl = 1000s
smtpd_policy_service_timeout = 100s
smtpd_proxy_ehlo = $myhostname
smtpd_proxy_filter = 
smtpd_proxy_options = 
smtpd_proxy_timeout = 100s
smtpd_recipient_limit = 1000
smtpd_recipient_overshoot_limit = 1000
smtpd_recipient_restrictions = reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unlisted_recipient, check_policy_service inet:127.0.0.1:7777, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_non_fqdn_helo_hostname, reject_invalid_helo_hostname, check_policy_service inet:127.0.0.1:10031
smtpd_reject_unlisted_recipient = yes
smtpd_reject_unlisted_sender = yes
smtpd_restriction_classes = 
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = no
smtpd_sasl_exceptions_networks = 
smtpd_sasl_local_domain = 
smtpd_sasl_path = ./dovecot-auth
smtpd_sasl_security_options = noanonymous
smtpd_sasl_tls_security_options = $smtpd_sasl_security_options
smtpd_sasl_type = dovecot
smtpd_sender_login_maps = proxy:ldap:/etc/postfix/ldap/sender_login_maps.cf
smtpd_sender_restrictions = permit_mynetworks, reject_sender_login_mismatch, permit_sasl_authenticated
smtpd_soft_error_limit = 10
smtpd_starttls_timeout = 300s
smtpd_timeout = ${stress?10}${stress:300}s
smtpd_tls_CAfile = /etc/ssl/certs/iRedMail_CA.pem
smtpd_tls_CApath = 
smtpd_tls_always_issue_session_ids = yes
smtpd_tls_ask_ccert = no
smtpd_tls_auth_only = no
smtpd_tls_ccert_verifydepth = 9
smtpd_tls_cert_file = /etc/ssl/certs/iRedMail_CA.pem
smtpd_tls_ciphers = export
smtpd_tls_dcert_file = 
smtpd_tls_dh1024_param_file = 
smtpd_tls_dh512_param_file = 
smtpd_tls_dkey_file = $smtpd_tls_dcert_file
smtpd_tls_eccert_file = 
smtpd_tls_eckey_file = $smtpd_tls_eccert_file
smtpd_tls_eecdh_grade = none
smtpd_tls_exclude_ciphers = 
smtpd_tls_fingerprint_digest = md5
smtpd_tls_key_file = /etc/ssl/private/iRedMail.key
smtpd_tls_loglevel = 0
smtpd_tls_mandatory_ciphers = medium
smtpd_tls_mandatory_exclude_ciphers = 
smtpd_tls_mandatory_protocols = SSLv3, TLSv1
smtpd_tls_protocols = 
smtpd_tls_received_header = no
smtpd_tls_req_ccert = no
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_tls_session_cache_timeout = 3600s
smtpd_tls_wrappermode = no
smtpd_use_tls = yes
soft_bounce = no
stale_lock_time = 500s
stress = 
strict_7bit_headers = no
strict_8bitmime = no
strict_8bitmime_body = no
strict_mailbox_ownership = yes
strict_mime_encoding_domain = no
strict_rfc821_envelopes = no
sun_mailtool_compatibility = no
swap_bangpath = yes
syslog_facility = mail
syslog_name = ${multi_instance_name:postfix}${multi_instance_name?$multi_instance_name}
tcp_windowsize = 0
tls_daemon_random_bytes = 32
tls_eecdh_strong_curve = prime256v1
tls_eecdh_ultra_curve = secp384r1
tls_export_cipherlist = ALL:+RC4:@STRENGTH
tls_high_cipherlist = ALL:!EXPORT:!LOW:!MEDIUM:+RC4:@STRENGTH
tls_low_cipherlist = ALL:!EXPORT:+RC4:@STRENGTH
tls_medium_cipherlist = ALL:!EXPORT:!LOW:+RC4:@STRENGTH
tls_null_cipherlist = eNULL:!aNULL
tls_random_bytes = 32
tls_random_exchange_name = ${data_directory}/prng_exch
tls_random_prng_update_period = 3600s
tls_random_reseed_period = 3600s
tls_random_source = dev:/dev/urandom
trace_service_name = trace
transport_maps = proxy:ldap:/etc/postfix/ldap/transport_maps_user.cf, proxy:ldap:/etc/postfix/ldap/transport_maps_domain.cf
transport_retry_time = 60s
trigger_timeout = 10s
undisclosed_recipients_header = To: undisclosed-recipients:;
unknown_address_reject_code = 450
unknown_address_tempfail_action = $reject_tempfail_action
unknown_client_reject_code = 450
unknown_helo_hostname_tempfail_action = $reject_tempfail_action
unknown_hostname_reject_code = 450
unknown_local_recipient_reject_code = 550
unknown_relay_recipient_reject_code = 550
unknown_virtual_alias_reject_code = 550
unknown_virtual_mailbox_reject_code = 550
unverified_recipient_defer_code = 450
unverified_recipient_reject_code = 450
unverified_recipient_reject_reason = 
unverified_recipient_tempfail_action = $reject_tempfail_action
unverified_sender_defer_code = 450
unverified_sender_reject_code = 450
unverified_sender_reject_reason = 
unverified_sender_tempfail_action = $reject_tempfail_action
verp_delimiter_filter = -=+
virtual_alias_domains = 
virtual_alias_expansion_limit = 1000
virtual_alias_maps = proxy:ldap:/etc/postfix/ldap/virtual_alias_maps.cf, proxy:ldap:/etc/postfix/ldap/virtual_group_maps.cf, proxy:ldap:/etc/postfix/ldap/sender_login_maps.cf, proxy:ldap:/etc/postfix/ldap/catchall_maps.cf
virtual_alias_recursion_limit = 1000
virtual_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit
virtual_destination_concurrency_limit = $default_destination_concurrency_limit
virtual_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback
virtual_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback
virtual_destination_rate_delay = $default_destination_rate_delay
virtual_destination_recipient_limit = $default_destination_recipient_limit
virtual_gid_maps = static:1000
virtual_initial_destination_concurrency = $initial_destination_concurrency
virtual_mailbox_base = /var/vmail
virtual_mailbox_domains = proxy:ldap:/etc/postfix/ldap/virtual_mailbox_domains.cf
virtual_mailbox_limit = 51200000
virtual_mailbox_lock = fcntl, dotlock
virtual_mailbox_maps = proxy:ldap:/etc/postfix/ldap/virtual_mailbox_maps.cf
virtual_minimum_uid = 1000
virtual_transport = dovecot
virtual_uid_maps = static:1000

2

Re: [SOLVED] slow connection

tetedekloo wrote:

... roundcube: IMAP Error: Login failed for exemple@exemple.com XX.XX.XX.XX. Could not connect to ssl://127.0.0.1:993 ...

It could be a Dovecot issue, IMAPS related.
As you mentioned, server is not under high load, it could not be a performance issue.

Since you have only 50 users on this server, i suggest trying to enable debug mode in Dovecot, then check its log files when same issue occurs.
Refer to wiki tutorial to enable debug mode in Dovecot (Just 'mail_debug = yes' should be enough):
http://iredmail.org/wiki/index.php?titl … In.Dovecot

3

Re: [SOLVED] slow connection

hi Zhang,

The only warn that pops in dovecot.log is :
Warning: All login processes are in use. You may need to increase login_max_processes_count


Pascal

4

Re: [SOLVED] slow connection

i also have
Jul 28 16:57:14 imap-login: Info: Disconnected: Shutting down (no auth attempts): rip=XX.XX.XX.XX, lip=YY.YY.YY.YY, TLS

here's my dovecot -n :

# 1.2.15: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-bpo.5-amd64 x86_64 Debian 5.0.8 
log_path: /var/log/dovecot.log
protocols: pop3 pop3s imap imaps managesieve
listen(default): *
listen(imap): *
listen(pop3): *
listen(managesieve): 127.0.0.1:2000
ssl_ca_file: /etc/ssl/certs/iRedMail_CA.pem
ssl_cert_file: /etc/ssl/certs/iRedMail_CA.pem
ssl_key_file: /etc/ssl/private/iRedMail.key
disable_plaintext_auth: no
login_dir: /var/run/dovecot/login
login_executable(default): /usr/lib/dovecot/imap-login
login_executable(imap): /usr/lib/dovecot/imap-login
login_executable(pop3): /usr/lib/dovecot/pop3-login
login_executable(managesieve): /usr/lib/dovecot/managesieve-login
first_valid_uid: 1000
last_valid_uid: 1000
mail_uid: 1000
mail_gid: 1000
mail_location: maildir:/%Lh/Maildir/:INDEX=/%Lh/Maildir/
mail_debug: yes
mbox_write_locks: fcntl dotlock
mail_executable(default): /usr/lib/dovecot/imap
mail_executable(imap): /usr/lib/dovecot/imap
mail_executable(pop3): /usr/lib/dovecot/pop3
mail_executable(managesieve): /usr/lib/dovecot/managesieve
mail_process_size: 1024
mail_plugins(default): quota imap_quota autocreate
mail_plugins(imap): quota imap_quota autocreate
mail_plugins(pop3): quota
mail_plugins(managesieve): 
mail_plugin_dir(default): /usr/lib/dovecot/modules/imap
mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap
mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3
mail_plugin_dir(managesieve): /usr/lib/dovecot/modules/managesieve
imap_client_workarounds(default): tb-extra-mailbox-sep
imap_client_workarounds(imap): tb-extra-mailbox-sep
imap_client_workarounds(pop3): 
imap_client_workarounds(managesieve): 
pop3_client_workarounds(default): 
pop3_client_workarounds(imap): 
pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh
pop3_client_workarounds(managesieve): 
namespace:
  type: private
  separator: /
  inbox: yes
  list: yes
  subscriptions: yes
namespace:
  type: shared
  separator: /
  prefix: Shared/%%u/
  location: maildir:/%%Lh/Maildir/:INDEX=/%%Lh/Maildir/Shared/%%u
  list: children
  subscriptions: yes
lda:
  postmaster_address: root
  auth_socket_path: /var/run/dovecot/auth-master
  mail_plugins: quota sieve autocreate
  sieve_global_path: /var/vmail/sieve/dovecot.sieve
  log_path: /var/log/sieve.log
auth default:
  mechanisms: plain login
  default_realm: relationpresse.com
  user: vmail
  debug: yes
  passdb:
    driver: ldap
    args: /etc/dovecot/dovecot-ldap.conf
  userdb:
    driver: ldap
    args: /etc/dovecot/dovecot-ldap.conf
  socket:
    type: listen
    client:
      path: /var/spool/postfix/dovecot-auth
      mode: 438
      user: postfix
      group: postfix
    master:
      path: /var/run/dovecot/auth-master
      mode: 438
      user: vmail
      group: vmail
plugin:
  quota_warning: storage=85%% /usr/local/bin/dovecot-quota-warning.sh 85
  quota_warning2: storage=90%% /usr/local/bin/dovecot-quota-warning.sh 90
  quota_warning3: storage=95%% /usr/local/bin/dovecot-quota-warning.sh 95
  quota: dict:user::proxy::quotadict
  quota_rule: *:storage=0
  expire: Trash 7 Trash/* 7 Junk 30
  expire_dict: proxy::expire
  auth_socket_path: /var/run/dovecot/auth-master
  sieve: /var/vmail/sieve/%Ld/%Ln/dovecot.sieve
  autocreate: INBOX
  autocreate2: Sent
  autocreate3: Trash
  autocreate4: Drafts
  autocreate5: Junk
  autosubscribe: INBOX
  autosubscribe2: Sent
  autosubscribe3: Trash
  autosubscribe4: Drafts
  autosubscribe5: Junk
  acl: vfile
  acl_shared_dict: proxy::acl
  sieve: /var/vmail/sieve/%Ld/%Ln/dovecot.sieve
  sieve_dir: /var/vmail/sieve/%Ld/%Ln/
dict:
  expire: db:/var/lib/dovecot/expire/expire.db
  quotadict: mysql:/etc/dovecot/dovecot-used-quota.conf
  acl: mysql:/etc/dovecot/dovecot-share-folder.conf

==== Provide basic information to help troubleshoot ====
- iRedMail version:
- Linux/BSD distribution name and version:
- Any related log? Log is helpful for troubleshooting.
====

5

Re: [SOLVED] slow connection

tetedekloo wrote:

Warning: All login processes are in use. You may need to increase login_max_processes_count

That's wonderful, you got the root cause. What you need to do is adjust value of login_max_processes_count in Dovecot.
Reference:
- http://wiki.dovecot.org/LoginProcess?hi … s_count%29
- http://wiki.dovecot.org/PerformanceTuni … s_count%29

6

Re: [SOLVED] slow connection

Done
mercimerci

Pascal