Postfix, Dovecot, BlackBerry/thunderbird/gmail

Discussion in 'Server Operation' started by soccerstamina, Jun 26, 2012.

  1. soccerstamina

    soccerstamina New Member

    I am running RHEL with postfix and dovecot.
    I obtain mail via pop3 with my BB, Thunderbird and other users get it with Gmail.
    It works 90% of the time. Right up until there is a medium sized email that clogs the pop3. I'm not talking a large email it'll hang on less than 2 mb.


    If it were just one individual I wouldn't worry about this much but it is uniform across many users, many receiving devices (outlook/gmail/Blackberry/thunderbird/etc), and it really doesn't have to be a very large attachment to create this hang and we then have to use squirrel mail to blow the offending email away and all is well again.
    Any ideas?
     
  2. falko

    falko Super Moderator Howtoforge Staff Moderator HowtoForge Supporter ISPConfig Developer

    Are there any errors in your mail log (in the /var/log/ directory)?

    Can you post the outputs of
    Code:
    postconf -n
    and
    Code:
    postconf -d
    ?
     
  3. soccerstamina

    soccerstamina New Member

    Maillog :
    mail dovecot: POP3(derrick@123.com): Disconnected for inactivity in reading our output top=0/0, retr=1/0, del=0/144, size=8391089
    mail dovecot: POP3(mel@123.com): Disconnected for inactivity in reading our output top=0/0, retr=5/2270592, del=0/21, size=4768021


    postconf -n :
    alias_database = hash:/etc/aliases
    alias_maps = hash:/etc/aliases
    broken_sasl_auth_clients = yes
    command_directory = /usr/sbin
    config_directory = /etc/postfix
    content_filter = amavisfeed:[127.0.0.1]:10024
    daemon_directory = /usr/libexec/postfix
    data_directory = /var/lib/postfix
    debug_peer_level = 2
    home_mailbox = Maildir/
    html_directory = no
    inet_interfaces = all
    mail_owner = postfix
    mailbox_transport = lmtp:unix:/usr/local/var/lib/dovecot/lmtp
    mailq_path = /usr/bin/mailq
    manpage_directory = /usr/local/man
    message_size_limit = 20480000
    mydestination = $myhostname, localhost
    myhostname = mail.123.com
    mynetworks = $config_directory/mynetworks
    mynetworks_style = host
    myorigin = $mydomain
    newaliases_path = /usr/bin/newaliases
    queue_directory = /var/spool/postfix
    readme_directory = /usr/share/doc/postfix-2.2.10/README_FILES
    sample_directory = /usr/share/doc/postfix-2.2.10/samples
    sendmail_path = /usr/sbin/sendmail
    setgid_group = postdrop
    smtp_helo_name = 123.com
    smtp_tls_note_starttls_offer = yes
    smtp_use_tls = yes
    smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_pipelining
    smtpd_helo_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_invalid_hostname, reject_non_fqdn_hostname
    smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, permit_auth_destination, reject_unauth_destination, reject_unauth_pipelining, reject_non_fqdn_recipient, reject_unknown_recipient_domain, check_policy_service unix:private/policy-spf, check_recipient_maps
    smtpd_sasl_auth_enable = yes
    smtpd_sasl_authenticated_header = yes
    smtpd_sasl_path = private/auth
    smtpd_sasl_security_options = noanonymous
    smtpd_sasl_type = dovecot
    smtpd_sender_restrictions = check_sender_access regexp:/etc/postfix/tag_as_originating.re, permit_mynetworks, permit_sasl_authenticated, check_sender_access regexp:/etc/postfix/tag_as_foreign.re, reject_unknown_sender_domain, reject_non_fqdn_sender, reject_sender_login_mismatch
    smtpd_tls_CAfile = /etc/ssl/certs/smtpd.pem
    smtpd_tls_cert_file = /etc/ssl/certs/smtpd.pem
    smtpd_tls_key_file = /etc/ssl/certs/smtpd.pem
    smtpd_tls_loglevel = 1
    smtpd_tls_received_header = yes
    smtpd_tls_session_cache_timeout = 3600s
    smtpd_use_tls = yes
    tls_random_source = dev:/dev/urandom
    transport_maps = hash:/etc/postfix/transport
    unknown_local_recipient_reject_code = 550
    virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
    virtual_gid_maps = static:1001
    virtual_mailbox_base = /var/virtual
    virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
    virtual_mailbox_limit = 256000000
    virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
    virtual_minimum_uid = 1001
    virtual_transport = virtual
    virtual_uid_maps = static:1001

    postconf -d :

    2bounce_notice_recipient = postmaster
    access_map_reject_code = 554
    address_verify_default_transport = $default_transport
    address_verify_local_transport = $local_transport
    address_verify_map =
    address_verify_negative_cache = yes
    address_verify_negative_expire_time = 3d
    address_verify_negative_refresh_time = 3h
    address_verify_poll_count = 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_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/aliases
    alias_maps = hash:/etc/aliases, nis:mail.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_bcc =
    anvil_rate_time_unit = 60s
    anvil_status_update_time = 600s
    append_at_myorigin = yes
    append_dot_mydomain = yes
    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 = yes
    body_checks =
    body_checks_size_limit = 51200
    bounce_notice_recipient = postmaster
    bounce_queue_lifetime = 5d
    bounce_service_name = bounce
    bounce_size_limit = 50000
    bounce_template_file =
    broken_sasl_auth_clients = no
    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 =
    cyrus_sasl_config_path =
    daemon_directory = /usr/libexec/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_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 = no
    dont_remove = 0
    double_bounce_sender = double-bounce
    duplicate_filter_limit = 1000
    empty_address_recipient = MAILER-DAEMON
    empty_address_relayhost_maps_lookup_key = <>
    enable_original_recipient = yes
    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 =
    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_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_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_starttls_timeout = 300s
    lmtp_tcp_port = 24
    lmtp_tls_CAfile =
    lmtp_tls_CApath =
    lmtp_tls_cert_file =
    lmtp_tls_dcert_file =
    lmtp_tls_dkey_file = $lmtp_tls_dcert_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_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 = 20080123
    mail_spool_directory = /var/mail
    mail_version = 2.5.0
    mailbox_command =
    mailbox_command_maps =
    mailbox_delivery_lock = fcntl, dotlock
    mailbox_size_limit = 51200000
    mailbox_transport =
    mailbox_transport_maps =
    mailq_path = /usr/bin/mailq
    manpage_directory = /usr/local/man
    maps_rbl_domains =
    maps_rbl_reject_code = 554
    masquerade_classes = envelope_sender, header_sender, header_recipient
    masquerade_domains =
    masquerade_exceptions =
    max_idle = 100s
    max_use = 100
    maximal_backoff_time = 4000s
    maximal_queue_lifetime = 5d
    message_reject_characters =
    message_size_limit = 10240000
    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_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}
    milter_protocol = 2
    milter_rcpt_macros = i {rcpt_addr}
    milter_unknown_command_macros =
    mime_boundary_length_limit = 2048
    mime_header_checks = $header_checks
    mime_nesting_limit = 100
    minimal_backoff_time = 300s
    multi_recipient_bounce_reject_code = 550
    mydestination = $myhostname, localhost.$mydomain, localhost
    mydomain = 123.com
    myhostname = mail.123.com
    mynetworks = 127.0.0.0/8 xxx.xx.xx.xxx/xx
    mynetworks_style = subnet
    myorigin = $myhostname
    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,relay_domains,smtpd_access_maps
    permit_mx_backup_networks =
    pickup_service_name = pickup
    plaintext_reject_code = 450
    prepend_delivered_header = command, file, forward
    process_id_directory = pid
    propagate_unmatched_extensions = canonical, virtual
    proxy_interfaces =
    proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks
    proxy_write_maps = $smtp_sasl_auth_cache_name $lmtp_sasl_auth_cache_name
    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 =
    recipient_canonical_classes = envelope_recipient, header_recipient
    recipient_canonical_maps =
    recipient_delimiter =
    reject_code = 554
    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
    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 = /etc/postfix
    send_cyrus_sasl_authzid = no
    sender_bcc_maps =
    sender_canonical_classes = envelope_sender, header_sender
    sender_canonical_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 = 120s
    smtp_data_xfer_timeout = 180s
    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_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_cert_file =
    smtp_tls_dcert_file =
    smtp_tls_dkey_file = $smtp_tls_dcert_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_scert_verifydepth = 9
    smtp_tls_secure_cert_match = nexthop, dot-nexthop
    smtp_tls_security_level =
    smtp_tls_session_cache_database =
    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
    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_data_restrictions =
    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 = 20
    smtpd_helo_required = no
    smtpd_helo_restrictions =
    smtpd_history_flush_threshold = 100
    smtpd_junk_command_limit = 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_timeout = 100s
    smtpd_recipient_limit = 1000
    smtpd_recipient_overshoot_limit = 1000
    smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination
    smtpd_reject_unlisted_recipient = yes
    smtpd_reject_unlisted_sender = no
    smtpd_restriction_classes =
    smtpd_sasl_auth_enable = no
    smtpd_sasl_authenticated_header = no
    smtpd_sasl_exceptions_networks =
    smtpd_sasl_local_domain =
    smtpd_sasl_path = smtpd
    smtpd_sasl_security_options = noanonymous
    smtpd_sasl_tls_security_options = $smtpd_sasl_security_options
    smtpd_sasl_type = dovecot
    smtpd_sender_login_maps =
    smtpd_sender_restrictions =
    smtpd_soft_error_limit = 10
    smtpd_starttls_timeout = 300s
    smtpd_timeout = 300s
    smtpd_tls_CAfile =
    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 =
    smtpd_tls_dcert_file =
    smtpd_tls_dh1024_param_file =
    smtpd_tls_dh512_param_file =
    smtpd_tls_dkey_file = $smtpd_tls_dcert_file
    smtpd_tls_exclude_ciphers =
    smtpd_tls_fingerprint_digest = md5
    smtpd_tls_key_file = $smtpd_tls_cert_file
    smtpd_tls_loglevel = 0
    smtpd_tls_mandatory_ciphers = medium
    smtpd_tls_mandatory_exclude_ciphers =
    smtpd_tls_mandatory_protocols = SSLv3, TLSv1
    smtpd_tls_received_header = no
    smtpd_tls_req_ccert = no
    smtpd_tls_security_level =
    smtpd_tls_session_cache_database =
    smtpd_tls_session_cache_timeout = 3600s
    smtpd_tls_wrappermode = no
    smtpd_use_tls = no
    soft_bounce = no
    stale_lock_time = 500s
    stress =
    strict_7bit_headers = no
    strict_8bitmime = no
    strict_8bitmime_body = no
    strict_mime_encoding_domain = no
    strict_rfc821_envelopes = no
    sun_mailtool_compatibility = no
    swap_bangpath = yes
    syslog_facility = mail
    syslog_name = postfix
    tls_daemon_random_bytes = 32
    tls_export_cipherlist = ALL:+RC4:mad:STRENGTH
    tls_high_cipherlist = ALL:!EXPORT:!LOW:!MEDIUM:+RC4:mad:STRENGTH
    tls_low_cipherlist = ALL:!EXPORT:+RC4:mad:STRENGTH
    tls_medium_cipherlist = ALL:!EXPORT:!LOW:+RC4:mad: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 =
    transport_retry_time = 60s
    trigger_timeout = 10s
    undisclosed_recipients_header = To: undisclosed-recipients:;
    unknown_address_reject_code = 450
    unknown_client_reject_code = 450
    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_reject_code = 450
    unverified_sender_reject_code = 450
    verp_delimiter_filter = -=+
    virtual_alias_domains = $virtual_alias_maps
    virtual_alias_expansion_limit = 1000
    virtual_alias_maps = $virtual_maps
    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 =
    virtual_initial_destination_concurrency = $initial_destination_concurrency
    virtual_mailbox_base =
    virtual_mailbox_domains = $virtual_mailbox_maps
    virtual_mailbox_limit = 51200000
    virtual_mailbox_lock = fcntl, dotlock
    virtual_mailbox_maps =
    virtual_minimum_uid = 100
    virtual_transport = virtual
    virtual_uid_maps =
     
  4. soccerstamina

    soccerstamina New Member

    I guess nobody knows.
     
  5. falko

    falko Super Moderator Howtoforge Staff Moderator HowtoForge Supporter ISPConfig Developer

    According to message_size_limit = 20480000 you should be able to receive emails of a size of 20MB. :confused:
     
  6. TiTex

    TiTex New Member

  7. sussane

    sussane New Member

    Hi,
    I am using CentOS 5.9 with postfix+dovecot v1.0.7
    I have problem in downloading emails with attachment of more than 3MB via my email client. (Thunderbird, Outlook, etc) I can send emails out with more than 3MB without any problem, whereas i can't download emails.

    Following is the error i found on maillog
    dovecot: pop3-login: SSL_write() syscall failed: Bad file descriptor

    After this the email client stops downloading emails.

    What could be the problem ? Please help me fix this . Thank You
     

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