Hi, I'm setting up a Postfix server to receive a few 100K emails. We are testing the load for bulk registration. I have been hacking around postfix for a few hours now and I really just need to be able to POP off of two accounts. I don't need anything fancy, this server is going to be around for a week. My Postfix main.cf Code: [root@mx3 dovecot]# postconf 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 = postmaster 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 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 = daemon_directory = /usr/libexec/postfix daemon_timeout = 18000s 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_limit = 20 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 = 10000 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 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 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 = 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 = 100s ipc_timeout = 3600s ipc_ttl = 1000s line_length_limit = 2048 lmtp_bind_address = lmtp_bind_address6 = 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_limit = $default_destination_concurrency_limit 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_host_lookup = dns lmtp_lhlo_name = $myhostname lmtp_lhlo_timeout = 300s lmtp_line_length_limit = 990 lmtp_mail_timeout = 300s lmtp_mx_address_limit = 5 lmtp_mx_session_limit = 2 lmtp_pix_workaround_delay_time = 10s lmtp_pix_workaround_threshold_time = 500s lmtp_quit_timeout = 300s lmtp_quote_rfc821_envelope = yes lmtp_randomize_addresses = yes lmtp_rcpt_timeout = 300s lmtp_rset_timeout = 20s lmtp_sasl_auth_enable = no 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_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 = 5 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_limit = 2 local_destination_recipient_limit = 1 local_header_rewrite_clients = permit_inet_interfaces local_recipient_maps = proxy:unix:passwd.byname $alias_maps local_transport = local:$myhostname luser_relay = mail_name = Postfix mail_owner = postfix mail_release_date = 200600825 mail_spool_directory = /var/mail mail_version = 2.3.3 mailbox_command = mailbox_command_maps = mailbox_delivery_lock = fcntl, dotlock mailbox_size_limit = 51200000 mailbox_transport = mailbox_transport_maps = mailq_path = /usr/bin/mailq.postfix 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 = 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_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 = 1000s multi_recipient_bounce_reject_code = 550 mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, studentkort.se mydomain = studentkort.se myhostname = mx3.studentkort.se mynetworks = 127.0.0.1/32 10.10.200.100/32 mynetworks_style = host myorigin = $mydomain nested_header_checks = $header_checks newaliases_path = /usr/bin/newaliases.postfix 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 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_error_delay = 1s qmqpd_timeout = 300s queue_directory = /var/spool/postfix queue_file_attribute_count_limit = 100 queue_minfree = 0 queue_run_delay = 1000s queue_service_name = qmgr rbl_reply_maps = readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES 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_limit = $default_destination_concurrency_limit relay_destination_recipient_limit = $default_destination_recipient_limit relay_domains = $mydestination relay_domains_reject_code = 554 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-2.3.3/samples sender_bcc_maps = sender_canonical_classes = envelope_sender, header_sender sender_canonical_maps = sender_dependent_relayhost_maps = sendmail_path = /usr/sbin/sendmail.postfix 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_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_limit = $default_destination_concurrency_limit 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_helo_name = $myhostname smtp_helo_timeout = 300s smtp_host_lookup = dns smtp_line_length_limit = 990 smtp_mail_timeout = 300s smtp_mx_address_limit = 5 smtp_mx_session_limit = 2 smtp_never_send_ehlo = no smtp_pix_workaround_delay_time = 10s smtp_pix_workaround_threshold_time = 500s smtp_quit_timeout = 300s smtp_quote_rfc821_envelope = yes smtp_randomize_addresses = yes smtp_rcpt_timeout = 300s smtp_rset_timeout = 20s smtp_sasl_auth_enable = yes smtp_sasl_mechanism_filter = smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_path = smtp_sasl_security_options = 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_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 = 5 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_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 = private/auth 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 = 5 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_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 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:@STRENGTH tls_high_cipherlist = !EXPORT:!LOW:!MEDIUM:ALL:+RC4:@STRENGTH tls_low_cipherlist = !EXPORT:ALL:+RC4:@STRENGTH tls_medium_cipherlist = !EXPORT:!LOW:ALL:+RC4:@STRENGTH tls_null_cipherlist = !aNULL:eNULL+kRSA tls_random_bytes = 32 tls_random_exchange_name = ${config_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_limit = $default_destination_concurrency_limit virtual_destination_recipient_limit = $default_destination_recipient_limit virtual_gid_maps = virtual_mailbox_base = virtual_mailbox_domains = $virtual_mailbox_maps virtual_mailbox_limit = 51200000 virtual_mailbox_lock = fcntl virtual_mailbox_maps = virtual_minimum_uid = 100 virtual_transport = virtual virtual_uid_maps = [root@mx3 dovecot]# My dovecot.conf Code: ## Dovecot configuration file # Protocols we want to be serving: imap imaps pop3 pop3s # If you only want to use dovecot-auth, you can set this to "none". #protocols = imap imaps pop3 pop3s # IP or host address where to listen in for connections. It's not currently # possible to specify multiple addresses. "*" listens in all IPv4 interfaces. # "[::]" listens in all IPv6 interfaces, but may also listen in all IPv4 # interfaces depending on the operating system. # # If you want to specify ports for each service, you will need to configure # these settings inside the protocol imap/pop3 { ... } section, so you can # specify different ports for IMAP/POP3. For example: # protocol imap { # listen = *:10143 # ssl_listen = *:10943 # .. # } # protocol pop3 { # listen = *:10100 # .. # } #listen = [::] log_path = /var/log/dovecot/error.log # Log file to use for informational and debug messages. # Default is the same as log_path. info_log_path = /var/log/dovecot/info.log # Prefix for each line written to log file. % codes are in strftime(3) # format. #log_timestamp = "%b %d %H:%M:%S " # Disable SSL/TLS support. #ssl_disable = no ssl_disable = yes # Set max. process size in megabytes. If you don't use # login_process_per_connection you might need to grow this. login_process_size = 64 # Space-separated list of elements we want to log. The elements which have # a non-empty variable value are joined together to form a comma-separated # string. #login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c # Login log format. %$ contains login_log_format_elements string, %s contains # the data we want to log. #login_log_format = %$: %s ## ## Mailbox locations and namespaces ## # Location for users' mailboxes. This is the same as the old default_mail_env # setting. The default is empty, which means that Dovecot tries to find the # mailboxes automatically. This won't work if the user doesn't have any mail # yet, so you should explicitly tell Dovecot the full location. # # If you're using mbox, giving a path to the INBOX file (eg. /var/mail/%u) # isn't enough. You'll also need to tell Dovecot where the other mailboxes are # kept. This is called the "root mail directory", and it must be the first # path given in the mail_location setting. # # There are a few special variables you can use, eg.: # # %u - username # %n - user part in user@domain, same as %u if there's no domain # %d - domain part in user@domain, empty if there's no domain # %h - home directory # # See doc/wiki/Variables.txt for full list. Some examples: # # mail_location = maildir:~/Maildir # mail_location = mbox:~/mail:INBOX=/var/mail/%u # mail_location = mbox:/var/mail/%d/%1n/%n:INDEX=/var/indexes/%d/%1n/%n # # <doc/wiki/MailLocation.txt> # #mail_location = # Save mails with CR+LF instead of plain LF. This makes sending those mails # take less CPU, especially with sendfile() syscall with Linux and FreeBSD. # But it also creates a bit more disk I/O which may just make it slower. # Also note that if other software reads the mboxes/maildirs, they may handle # the extra CRs wrong and cause problems. #mail_save_crlf = no ## ## Maildir-specific settings ## ## ## mbox-specific settings ## # Which locking methods to use for locking mbox. There are four available: # dotlock: Create <mailbox>.lock file. This is the oldest and most NFS-safe # solution. If you want to use /var/mail/ like directory, the users # will need write access to that directory. # fcntl : Use this if possible. Works with NFS too if lockd is used. # flock : May not exist in all systems. Doesn't work with NFS. # lockf : May not exist in all systems. Doesn't work with NFS. # # You can use multiple locking methods; if you do the order they're declared # in is important to avoid deadlocks if other MTAs/MUAs are using multiple # locking methods as well. Some operating systems don't allow using some of # them simultaneously. #mbox_read_locks = fcntl #mbox_write_locks = fcntl # Maximum time in seconds to wait for lock (all of them) before aborting. #mbox_lock_timeout = 300 # If dotlock exists but the mailbox isn't modified in any way, override the # lock file after this many seconds. #mbox_dotlock_change_timeout = 120 # Like mbox_dirty_syncs, but don't do full syncs even with SELECT, EXAMINE, # EXPUNGE or CHECK commands. If this is set, mbox_dirty_syncs is ignored. #mbox_very_dirty_syncs = no # Delay writing mbox headers until doing a full write sync (EXPUNGE and CHECK # commands and when closing the mailbox). This is especially useful for POP3 # where clients often delete all mails. The downside is that our changes # aren't immediately visible to other MUAs. #mbox_lazy_writes = yes # If mbox size is smaller than this (in kilobytes), don't write index files. # If an index file already exists it's still read, just not updated. #mbox_min_index_size = 0 ## ## dbox-specific settings ## # Maximum dbox file size in kilobytes until it's rotated. #dbox_rotate_size = 2048 # Minimum dbox file size in kilobytes before it's rotated # (overrides dbox_rotate_days) #dbox_rotate_min_size = 16 # Maximum dbox file age in days until it's rotated. Day always begins from # midnight, so 1 = today, 2 = yesterday, etc. 0 = check disabled. #dbox_rotate_days = 0 ## ## IMAP specific settings ## protocol imap { # Login executable location. #login_executable = /usr/libexec/dovecot/imap-login # IMAP executable location. Changing this allows you to execute other # binaries before the imap process is executed. # # This would write rawlogs into ~/dovecot.rawlog/ directory: # mail_executable = /usr/libexec/dovecot/rawlog /usr/libexec/dovecot/imap # # This would attach gdb into the imap process and write backtraces into # /tmp/gdbhelper.* files: # mail_executable = /usr/libexec/dovecot/gdbhelper /usr/libexec/dovecot/imap # #mail_executable = /usr/libexec/dovecot/imap # Maximum IMAP command line length in bytes. Some clients generate very long # command lines with huge mailboxes, so you may need to raise this if you get # "Too long argument" or "IMAP command line too large" errors often. #imap_max_line_length = 65536 # Support for dynamically loadable plugins. mail_plugins is a space separated # list of plugins to load. #mail_plugins = #mail_plugin_dir = /usr/lib/dovecot/imap # Send IMAP capabilities in greeting message. This makes it unnecessary for # clients to request it with CAPABILITY command, so it saves one round-trip. # Many clients however don't understand it and ask the CAPABILITY anyway. #login_greeting_capability = no # Override the IMAP CAPABILITY response. #imap_capability = } ## ## POP3 specific settings ## protocol pop3 { # Login executable location. #login_executable = /usr/libexec/dovecot/pop3-login # POP3 executable location. See IMAP's mail_executable above for examples # how this could be changed. #mail_executable = /usr/libexec/dovecot/pop3 # Don't try to set mails non-recent or seen with POP3 sessions. This is # mostly intended to reduce disk I/O. With maildir it doesn't move files # from new/ to cur/, with mbox it doesn't write Status-header. #pop3_no_flag_updates = no # Support LAST command which exists in old POP3 specs, but has been removed # from new ones. Some clients still wish to use this though. Enabling this # makes RSET command clear all \Seen flags from messages. #pop3_enable_last = no # If mail has X-UIDL header, use it as the mail's UIDL. #pop3_reuse_xuidl = no # Keep the mailbox locked for the entire POP3 session. #pop3_lock_session = no # POP3 logout format string: # %t - number of TOP commands # %p - number of bytes sent to client as a result of TOP command # %r - number of RETR commands # %b - number of bytes sent to client as a result of RETR command # %d - number of deleted messages # %m - number of messages (before deletion) # %s - mailbox size in bytes (before deletion) #pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s # Support for dynamically loadable plugins. mail_plugins is a space separated # list of plugins to load. #mail_plugins = #mail_plugin_dir = /usr/lib/dovecot/pop3 # Workarounds for various client bugs: # outlook-no-nuls: # Outlook and Outlook Express hang if mails contain NUL characters. # This setting replaces them with 0x80 character. # oe-ns-eoh: # Outlook Express and Netscape Mail breaks if end of headers-line is # missing. This option simply sends it if it's missing. # The list is space-separated. #pop3_client_workarounds = } ## ## LDA specific settings ## protocol lda { # Address to use when sending rejection mails. postmaster_address = [email protected] # Hostname to use in various parts of sent mails, eg. in Message-Id. # Default is the system's real hostname. #hostname = # Support for dynamically loadable plugins. mail_plugins is a space separated # list of plugins to load. #mail_plugins = #mail_plugin_dir = /usr/lib/dovecot/lda # Binary to use for sending mails. #sendmail_path = /usr/lib/sendmail # UNIX socket path to master authentication server to find users. #auth_socket_path = /var/run/dovecot/auth-master } ## ## Authentication processes ## # Executable location #auth_executable = /usr/libexec/dovecot/dovecot-auth # Set max. process size in megabytes. #auth_process_size = 256 auth_username_format="%Ld_%Ln" # If you want to allow master users to log in by specifying the master # username within the normal username string (ie. not using SASL mechanism's # support for it), you can specify the separator character here. The format # is then <username><separator><master username>. UW-IMAP uses "*" as the # separator, so that could be a good choice. #auth_master_user_separator = # Username to use for users logging in with ANONYMOUS SASL mechanism #auth_anonymous_username = anonymous # More verbose logging. Useful for figuring out why authentication isn't # working. #auth_verbose = no # Even more verbose logging for debugging purposes. Shows for example SQL # queries. #auth_debug = no # In case of password mismatches, log the passwords and used scheme so the # problem can be debugged. Requires auth_debug=yes to be set. #auth_debug_passwords = no # Maximum number of dovecot-auth worker processes. They're used to execute # blocking passdb and userdb queries (eg. MySQL and PAM). They're # automatically created and destroyed as needed. #auth_worker_max_count = 30 # Host name to use in GSSAPI principal names. The default is to use the # name returned by gethostname(). #auth_gssapi_hostname = # Kerberos keytab to use for the GSSAPI mechanism. Will use the system # default (usually /etc/krb5.keytab) if not specified. #auth_krb5_keytab = auth default { # Space separated list of wanted authentication mechanisms: # plain login digest-md5 cram-md5 ntlm rpa apop anonymous gssapi # NOTE: See also disable_plaintext_auth setting. mechanisms = plain # # Password database is used to verify user's password (and nothing more). # You can have multiple passdbs and userdbs. This is useful if you want to # allow both system users (/etc/passwd) and virtual users to login without # duplicating the system users into virtual database. # # <doc/wiki/PasswordDatabase.txt> # # By adding master=yes setting inside a passdb you make the passdb a list # of "master users", who can log in as anyone else. Unless you're using PAM, # you probably still want the destination user to be looked up from passdb # that it really exists. This can be done by adding pass=yes setting to the # master passdb. <doc/wiki/Authentication.MasterUsers.txt> # Users can be temporarily disabled by adding a passdb with deny=yes. # If the user is found from that database, authentication will fail. # The deny passdb should always be specified before others, so it gets # checked first. Here's an example: #passdb passwd-file { # File contains a list of usernames, one per line #args = /etc/dovecot.deny #deny = yes #} } # System users (NSS, /etc/passwd, or similiar) # In many systems nowadays this uses Name Service Switch, which is # configured in /etc/nsswitch.conf. <doc/wiki/AuthDatabase.Passwd.txt> #passdb passwd { # [blocking=yes] - See userdb passwd for explanation #args = #} # Shadow passwords for system users (NSS, /etc/shadow or similiar). # Deprecated by PAM nowadays. # <doc/wiki/PasswordDatabase.Shadow.txt> #passdb shadow { # [blocking=yes] - See userdb passwd for explanation #args = #} # PAM-like authentication for OpenBSD. # <doc/wiki/PasswordDatabase.BSDAuth.txt> #passdb bsdauth { # [cache_key=<key>] - See cache_key in PAM for explanation. #args = #} # passwd-like file with specified location # <doc/wiki/AuthDatabase.PasswdFile.txt> #passdb passwd-file { # Path for passwd-file #args = #} # checkpassword executable authentication # NOTE: You will probably want to use "userdb prefetch" with this. # <doc/wiki/PasswordDatabase.CheckPassword.txt> #passdb checkpassword { # Path for checkpassword binary #args = #} # SQL database <doc/wiki/AuthDatabase.SQL.txt> #passdb sql { # Path for SQL configuration file, see doc/dovecot-sql-example.conf #args = #} # LDAP database <doc/wiki/AuthDatabase.LDAP.txt> #passdb ldap { # Path for LDAP configuration file, see doc/dovecot-ldap-example.conf #args = #} # vpopmail authentication <doc/wiki/AuthDatabase.VPopMail.txt> #passdb vpopmail { # [cache_key=<key>] - See cache_key in PAM for explanation. #args = #} # # User database specifies where mails are located and what user/group IDs # own them. For single-UID configuration use "static". # # <doc/wiki/UserDatabase.txt> # # System users (NSS, /etc/passwd, or similiar). In many systems nowadays this # uses Name Service Switch, which is configured in /etc/nsswitch.conf. # <doc/wiki/AuthDatabase.Passwd.txt> userdb passwd { # [blocking=yes] - By default the lookups are done in the main dovecot-auth # process. This setting causes the lookups to be done in auth worker # proceses. Useful with remote NSS lookups that may block. # NOTE: Be sure to use this setting with nss_ldap or users might get # logged in as each others! #args = } # passwd-like file with specified location # <doc/wiki/AuthDatabase.PasswdFile.txt> #userdb passwd-file { # Path for passwd-file #args = #} # User to use for the process. This user needs access to only user and # password databases, nothing else. Only shadow and pam authentication # requires roots, so use something else if possible. Note that passwd # authentication with BSDs internally accesses shadow files, which also # requires roots. Note that this user is NOT used to access mails. # That user is specified by userdb above. user = root } # If you wish to use another authentication server than dovecot-auth, you can # use connect sockets. They are assumed to be already running, Dovecot's master # process only tries to connect to them. They don't need any other settings # than the path for the master socket, as the configuration is done elsewhere. # Note that the client sockets must exist in the login_dir. #auth external { # socket connect { # master { # path = /var/run/dovecot/auth-master # } # } #} dict { #quota = mysql:/etc/dovecot-dict-quota.conf } ## ## Plugin settings ## plugin { } Logs: Code: dovecot: Sep 24 13:32:37 Info: Dovecot v1.0.7 starting up dovecot: Sep 24 13:32:51 Info: pop3-login: Disconnected: rip=10.10.200.60, lip=10.10.200.100 dovecot: Sep 24 13:33:21 Info: pop3-login: Disconnected: user=<_jmarcus>, method=PLAIN, rip=10.10.200.60, lip=10.10.200.100 dovecot: Sep 24 13:33:27 Info: pop3-login: Disconnected: user=<_jmarcus>, method=PLAIN, rip=10.10.200.60, lip=10.10.200.100 I have mail in my home directory, but can't seem to get POP working. I'm running CentOS 5.3 with SELINUX disabled. Any thoughts? thanks, James
