Postfix Configuration Question: Postfix server as a catch-all on office LAN

enso491 · 04-10-2008, 05:40 PM

Hello all,

I'm having a bit of trouble configuring postifx. We have a database full of live cusomter email addresses (across multiple domains) and I'm spamming them when I execute my automated tests.

I installed Fedora Core release 5 (Bordeaux) on a local machine with postfix to catch the outgoing emails. I was able to achieve this using the postfix setting virtual_alias_maps=regexp:/etc/postfix/virtual

This worked well because I could route all email to a system user cv_mail and use dovecot + squirrelmail to see the caught messages.

Unfortunately, the database that sends out email to all our customers also sends out administrative messages to my co-workers. These messages must arrive in their recipients' mailboxes.

Is there any way to configure postfix to:
1) route mail to all our customers [domains = NOT(@xyz.com)] to a single system user and
2) forward mail for our office [domain = xyz.com] to our exchange server (mail.xyz.com)?

I've read through the postfix Basic and Standard configuration pages, trapped ALL mail(see above), as well as sent ALL mail successfully to the exchange server. I just need some help putting it all together.

Please let me know if it would be helpful for me to post my current [broken] configuration.

Thanks!
-Mike

datopdog · 04-12-2008, 03:14 AM

Yes you can using transport maps
/etc/postfix/transport

Code:

xyz.com       smtp:[mail.xyz.com]

enso491 · 04-14-2008, 01:20 PM

Thanks for the reply topdog. That got me almost all the way there.

I made the entry in transport as suggested, along with anther entry below it:

Code:

*     :

This should take "default action" for every other domain. I then set

Code:

$default_transport = $local_transport

This configuration routes all mail for user@xyz.com to our exchange server as was needed. It also delivers mail locally to valid_local_user@any_other_domain.tld

I need to get any "non-xyz.com" domain to resolve to a single local user.

I've tried working with aliases, local_recipients and virtual tables. Every time I enter a value (a regular expression for !/.*@xyz.com/), I get my xyz.com mails bounced. The message in the maillog reads:

"User unknown in virtual alias table"

It looks like I have something configured to cause virtual to mask transport. My current configuration follows.

Thanks again!
-Mike

main.cf

Code:

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_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
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_service = 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 = $local_transport
default_verp_delimiters = +=
defer_code = 450
defer_service_name = defer
defer_transports = 
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
fallback_relay = 
fallback_transport = 
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
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
in_flow_delay = 1s
inet_interfaces = localhost
inet_protocols = ipv4
initial_destination_concurrency = 5
invalid_hostname_reject_code = 501
ipc_idle = 100s
ipc_timeout = 3600s
ipc_ttl = 1000s
line_length_limit = 2048
lmtp_cache_connection = yes
lmtp_connect_timeout = 0s
lmtp_data_done_timeout = 600s
lmtp_data_init_timeout = 120s
lmtp_data_xfer_timeout = 180s
lmtp_destination_concurrency_limit = $default_destination_concurrency_limit
lmtp_destination_recipient_limit = $default_destination_recipient_limit
lmtp_lhlo_timeout = 300s
lmtp_mail_timeout = 300s
lmtp_quit_timeout = 300s
lmtp_rcpt_timeout = 300s
lmtp_rset_timeout = 20s
lmtp_sasl_auth_enable = no
lmtp_sasl_password_maps = 
lmtp_sasl_security_options = noplaintext, noanonymous
lmtp_send_xforward_command = no
lmtp_skip_quit_response = no
lmtp_tcp_port = 24
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 = 20060103
mail_spool_directory = /var/mail
mail_version = 2.2.8
mailbox_command = 
mailbox_command_maps = 
mailbox_delivery_lock = fcntl, dotlock
mailbox_size_limit = 51200000
mailbox_transport = 
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_size_limit = 10240000
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 = xyz.com
myhostname = linux
mynetworks = 192.168.1.0/24 
mynetworks_style = subnet
myorigin = $myhostname
nested_header_checks = $header_checks
newaliases_path = /usr/bin/newaliases.postfix
non_fqdn_reject_code = 504
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
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-2.2.8/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
rewrite_service_name = rewrite
sample_directory = /usr/share/doc/postfix-2.2.8/samples
sender_based_routing = no
sender_bcc_maps = 
sender_canonical_classes = envelope_sender, header_sender
sender_canonical_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_connect_timeout = 30s
smtp_connection_cache_destinations = 
smtp_connection_cache_on_demand = yes
smtp_connection_cache_reuse_limit = 10
smtp_connection_cache_time_limit = 2s
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_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 = 0
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 = no
smtp_sasl_mechanism_filter = 
smtp_sasl_password_maps = 
smtp_sasl_security_options = noplaintext, noanonymous
smtp_sasl_tls_security_options = $var_smtp_sasl_opts
smtp_send_xforward_command = 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_cipherlist = 
smtp_tls_dcert_file = 
smtp_tls_dkey_file = $smtp_tls_dcert_file
smtp_tls_enforce_peername = yes
smtp_tls_key_file = $smtp_tls_cert_file
smtp_tls_loglevel = 0
smtp_tls_note_starttls_offer = no
smtp_tls_per_site = 
smtp_tls_scert_verifydepth = 5
smtp_tls_session_cache_database = 
smtp_tls_session_cache_timeout = 3600s
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_recipient_rate_limit = 0
smtpd_client_restrictions = 
smtpd_data_restrictions = 
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_noop_commands = 
smtpd_null_access_lookup_key = <>
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_application_name = smtpd
smtpd_sasl_auth_enable = no
smtpd_sasl_exceptions_networks = 
smtpd_sasl_local_domain = 
smtpd_sasl_security_options = noanonymous
smtpd_sasl_tls_security_options = $smtpd_sasl_security_options
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_ask_ccert = no
smtpd_tls_auth_only = no
smtpd_tls_ccert_verifydepth = 5
smtpd_tls_cert_file = 
smtpd_tls_cipherlist = 
smtpd_tls_dcert_file = 
smtpd_tls_dh1024_param_file = 
smtpd_tls_dh512_param_file = 
smtpd_tls_dkey_file = $smtpd_tls_dcert_file
smtpd_tls_key_file = $smtpd_tls_cert_file
smtpd_tls_loglevel = 0
smtpd_tls_received_header = no
smtpd_tls_req_ccert = no
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_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 = hash:/etc/postfix/transport
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 = regexp:/etc/postfix/virtual
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 =

virtual

Code:

!/.*@xyz.com/	cv_mail
# VIRTUAL(5)                                                          
# ... other comments

transport

Code:

xyz.com	smtp:[mail.xyz.com]
*	:
# TRANSPORT(5)

enso491 · 04-14-2008, 01:23 PM

I should probably add a point to my latest post.
I originally had two goals:

Quote:

Is there any way to configure postfix to:
1) route mail to all our customers [domains = NOT(@xyz.com)] to a single system user and
2) forward mail for our office [domain = xyz.com] to our exchange server (mail.xyz.com)?

We're good to go on goal 2. I just need to achieve goal 1 now.
-Mike

datopdog · 04-14-2008, 01:55 PM

Should it not be like this ?

Code:

!/*@xyz.com/	cv_mail

enso491 · 04-14-2008, 04:35 PM

It's working. Thanks for the suggestion.

I added the above line to my transport file.
In addition, I made the following changes to main.cf

Code:

append_dot_mydomain = no
local_recipient_maps =
luser_relay = cv_mail
myhostname = localhost

The second and third lines are important as they cause the system to forward all mail to non-system users to the catch-all user cv_mail.

Thanks again!
Best regards,
-Mike