LinuxQuestions.org - How to solve "unknown user"

Hi all,

I've recently configured our mail server (postfix/dovecot). Everything is running, I have a reverse DNS, MX records, A records etc.. I've added the users already.

Here is the problem, whenever I test email from an email client(Outlook 2003), there's no problem. But when try sending email from the outside the mail just bounce or deferred, it says:

Quote:

Note: Forwarded message is attached.

This is the mail system at host mail.mydomain.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<myaccount@mydomain.com>: unknown user: "myaccount"
Reporting-MTA: dns; mail.mydomain.com
X-Postfix-Queue-ID: AEBD64937AD
X-Postfix-Sender: rfc822; myaccount@mydomain.com
Arrival-Date: Mon, 22 Nov 2010 15:21:06 +0800 (PHT)

Final-Recipient: rfc822; myaccount@mydomain.com
Original-Recipient: rfc822;myaccount@mydomain.com
Action: failed
Status: 5.1.1
Diagnostic-Code: X-Postfix; unknown user: "myaccount"

Here is my main.cf

Code:

#alias_database = hash:/etc/postfix/aliases

#alias_maps = $alias_database

allow_mail_to_commands = alias,forward

allow_mail_to_files = alias,forward

allow_min_user = no

allow_percent_hack = yes

allow_untrusted_routing = no

always_bcc =

append_at_myorigin = yes

append_dot_mydomain = yes

best_mx_transport =

biff = no

bounce_notice_recipient = postmaster

bounce_size_limit = 50000

canonical_maps =

command_directory = /usr/sbin

command_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ

command_time_limit = 1000

daemon_directory = /usr/libexec/postfix

daemon_timeout = 18000

default_database_type = hash

default_delivery_slot_cost = 10

default_delivery_slot_discount = 50

default_delivery_slot_loan = 5

default_destination_concurrency_limit = 10

default_destination_recipient_limit = 50

default_extra_recipient_limit = 1000

default_minimum_delivery_slots = 3

default_privs = nobody

default_process_limit = 150

default_recipient_limit = 10000

default_transport = smtp

default_verp_delimiters = +=

defer_transports =

delay_notice_recipient = postmaster

delay_warning_time = 2

deliver_lock_attempts = 5

deliver_lock_delay = 1

disable_dns_lookups = no

disable_verp_bounces = no

disable_vrfy_command = yes



dont_remove = 0

double_bounce_sender = double-bounce

duplicate_filter_limit = 1000

empty_address_recipient = MAILER-DAEMON

error_notice_recipient = postmaster

expand_owner_alias = no

export_environment = TZ

extract_recipient_limit = 10240

fallback_relay =

fallback_transport =

#fast_flush_domains = $relay_domains

fast_flush_purge_time = 7d

fast_flush_refresh_time = 12h

fault_injection_code = 0

fork_attempts = 5

fork_delay = 1

forward_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ

forward_path = $home/.forward${recipient_delimiter}${extension},$home/.forward

hopcount_limit = 50

ignore_mx_lookup_error = no

import_environment = MAIL_CONFIG MAIL_DEBUG TZ XAUTHORITY DISPLAY

in_flow_delay = 1s

inet_interfaces = all



initial_destination_concurrency = 5

invalid_hostname_reject_code = 501

ipc_idle = 100

ipc_timeout = 3600

line_length_limit = 2048

lmtp_cache_connection = yes

lmtp_connect_timeout = 0

lmtp_data_done_timeout = 600

lmtp_data_init_timeout = 120

lmtp_data_xfer_timeout = 180

lmtp_lhlo_timeout = 300

lmtp_mail_timeout = 300

lmtp_quit_timeout = 300

lmtp_rcpt_timeout = 300

lmtp_rset_timeout = 300

#lmtp_sasl_auth_enable = no

#lmtp_sasl_password_maps =

#lmtp_sasl_security_options = noplaintext, noanonymous

lmtp_skip_quit_response = no

lmtp_tcp_port = 24

local_command_shell =

local_destination_concurrency_limit = 2

mail_version = postfix-2.5.1

maps_rbl_domains = rbl.maps.vix.com



maps_rbl_reject_code = 554

max_idle = 100

max_use = 100

maximal_backoff_time = 4000

maximal_queue_lifetime = 2



myhostname =mail.mydomain.com

mydomain = mydomain.com

mynetworks = 192.168.x.x/24, 192.168.y.y/24, 127.0.0.0/8, 122.54.172.52

mynetworks_style = subnet

myorigin = $myhostname

mydestination = $myhostname, localhost.$mydomain

mydestination = localhost, localhost.mydomain.com, mydomain.com, localhost.localdomain

mail_spool_directory = /var/spool/mail

home_mailbox = Mailbox



non_fqdn_reject_code = 504

notify_classes = policy,resource,software,protocol,delay,bounce

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

qmgr_fudge_factor = 100

qmgr_message_active_limit = 1000

qmgr_message_recipient_limit = 10000

qmgr_message_recipient_minimum = 10

qmgr_site_hog_factor = 100

qmqpd_authorized_clients =

qmqpd_error_delay = 5s

qmqpd_timeout = 300s

service_throttle_time = 60

smtp_always_send_ehlo = no

smtp_bind_address =

smtp_break_lines = yes

smtp_connect_timeout = 0

smtp_data_done_timeout = 600

smtp_data_init_timeout = 120

smtp_data_xfer_timeout = 180

smtp_helo_timeout = 300

smtp_mail_timeout = 300

smtp_never_send_ehlo = no

smtp_pix_workaround_delay_time = 10s

smtp_pix_workaround_threshold_time = 500s

smtp_quit_timeout = 300

smtp_randomize_addresses = yes

smtp_rcpt_timeout = 300

smtp_skip_4xx_greeting = no



smtp_skip_5xx_greeting = yes

smtp_skip_quit_response = yes

smtpd_banner = $myhostname ESMTP Postfix!

smtpd_delay_reject = yes

smtpd_error_sleep_time = 5

smtpd_etrn_restrictions =

smtpd_hard_error_limit = 100

smtpd_helo_required = yes

smtpd_helo_restrictions =

smtpd_junk_command_limit = 1000

smtpd_noop_commands =

smtpd_recipient_limit = 1000

smtpd_restriction_classes =



smtpd_recipient_restrictions =  reject_non_fqdn_sender,reject_non_fqdn_recipient,permit_mynetworks,reject_unknown_sender_domain,reject_unknown_recipient_domain,reject_rbl_client zen.spamhaus.org,reject_unauth_destination,reject_rbl_client opm.blitzed.org,reject_rbl_client list.dsbl.org,reject_rbl_client bl.spamcop.net,reject_rbl_client sbl-xbl.spamhaus.org,reject_rhsbl_client blackhole.securitysage.com,reject_rhsbl_sender blackhole.securitysage.com,reject_rbl_client relays.ordb.org,reject_rbl_client blackholes.easynet.nl,reject_rbl_client cbl.abuseat.org,reject_rbl_client proxies.blackholes.wirehub.net,reject_rbl_client sbl.spamhaus.org,reject_rbl_client opm.blitzed.org,reject_rbl_client dnsbl.njabl.org,reject_rbl_client multihop.dsbl.org



smtpd_sender_login_maps =

smtpd_soft_error_limit = 10

smtpd_timeout = 300

soft_bounce = no

stale_lock_time = 500

strict_rfc821_envelopes = yes

sun_mailtool_compatibility = no

swap_bangpath = yes

syslog_facility = mail

syslog_name = postfix

unknown_address_reject_code = 450

unknown_client_reject_code = 450

unknown_hostname_reject_code = 450

verp_delimiter_filter = -=+



# --------------------------------

# Deactivated, done in SpamAssasin

# --------------------------------

#    reject_rhsbl_client blackhole.securitysage.com,

#    reject_rhsbl_sender blackhole.securitysage.com,

#    reject_rbl_client relays.ordb.org,

#    reject_rbl_client blackholes.easynet.nl,

#    reject_rbl_client cbl.abuseat.org,

#    reject_rbl_client proxies.blackholes.wirehub.net,

#    reject_rbl_client bl.spamcop.net,

#    reject_rbl_client sbl.spamhaus.org,

#    reject_rbl_client opm.blitzed.org,

#    reject_rbl_client dnsbl.njabl.org,

#    reject_rbl_client list.dsbl.org,

#    reject_rbl_client multihop.dsbl.org,



# --------------------------------

# Deactivated, done in SpamAssasin

# --------------------------------

# Check Message Header and Body

# body_checks = regexp:$config_directory/body_checks

# header_checks = regexp:$config_directory/header_checks







debug_peer_level = 2



debugger_command =

PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin

xxgdb = $daemon_directory/$process_name $process_id & sleep 5

disable_vrfy_command = yes

show_user_unknown_table_name = no





virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf

virtual_gid_maps = static:89

virtual_mailbox_base = /home/virtual

virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf

virtual_mailbox_limit = 51200000

virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf

virtual_minimum_uid = 89

virtual_transport = virtual

virtual_uid_maps = static:89

# Additional for quota support

virtual_create_maildirsize = yes

virtual_mailbox_extended = yes

virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf

virtual_mailbox_limit_override = yes

virtual_maildir_limit_message = Sorry, the user's maildir has overdrawn his diskspace quota, please try again later.

virtual_overquota_bounce = yes



relay_domains = mysql:/etc/postfix/mysql_relay_domains_maps.cf









# Additional for quota support

#virtual_create_maildirsize = yes

#virtual_mailbox_extended = yes

#virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf

#virtual_mailbox_limit_override = yes

#virtual_maildir_limit_message = Sorry, the user's maildir has overdrawn his diskspace quota, please try again later.

#virtual_overquota_bounce = yes





#broken_sasl_auth_clients = yes

smtpd_recipient_restrictions =

  permit_mynetworks,

  permit_sasl_authenticated,

#  reject_non_fqdn_hostname,

#  reject_non_fqdn_sender,

#  reject_non_fqdn_recipient,

  reject_unauth_destination,

#  reject_unauth_pipelining,

#  reject_invalid_hostname,

#  reject_rbl_client opm.blitzed.org,

#  reject_rbl_client list.dsbl.org,

#  reject_rbl_client bl.spamcop.net,

#  reject_rbl_client sbl-xbl.spamhaus.org

smtpd_sasl_auth_enable = yes

smtpd_sasl_local_domain = $myhostname

smtpd_sasl_security_options = noanonymous

readme_directory = no

sample_directory = /etc/postfix

sendmail_path = /usr/sbin/sendmail

html_directory = no

#setgid_group = postdrop

command_directory = /usr/sbin

manpage_directory = /usr/local/man

#daemon_directory = /usr/libexec/postfix

newaliases_path = /usr/bin/newaliases

#mailq_path = /usr/bin/mailq

#queue_directory = /var/spool/postfix

#mail_owner = postfix

data_directory = /var/lib/postfix

I hope someone can help me. Thank you.

Here is the postconf -n output

Code:

allow_mail_to_commands = alias,forward

allow_mail_to_files = alias,forward

allow_min_user = no

allow_percent_hack = yes

allow_untrusted_routing = no

always_bcc =

append_at_myorigin = yes

append_dot_mydomain = yes

best_mx_transport =

biff = no

bounce_notice_recipient = postmaster

bounce_size_limit = 50000

canonical_maps =

command_directory = /usr/sbin

command_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ

command_time_limit = 1000

config_directory = /etc/postfix

daemon_directory = /usr/libexec/postfix

daemon_timeout = 18000

debug_peer_level = 2

default_database_type = hash

default_delivery_slot_cost = 10

default_delivery_slot_discount = 50

default_delivery_slot_loan = 5

default_destination_concurrency_limit = 10

default_destination_recipient_limit = 50

default_extra_recipient_limit = 1000

default_minimum_delivery_slots = 3

default_privs = nobody

default_process_limit = 150

default_recipient_limit = 10000

default_transport = smtp

default_verp_delimiters = +=

defer_transports =

delay_notice_recipient = postmaster

delay_warning_time = 2

deliver_lock_attempts = 5

deliver_lock_delay = 1

disable_dns_lookups = no

disable_verp_bounces = no

disable_vrfy_command = yes

dont_remove = 0

double_bounce_sender = double-bounce

duplicate_filter_limit = 1000

empty_address_recipient = MAILER-DAEMON

error_notice_recipient = postmaster

expand_owner_alias = no

export_environment = TZ

fallback_transport =

fast_flush_purge_time = 7d

fast_flush_refresh_time = 12h

fault_injection_code = 0

fork_attempts = 5

fork_delay = 1

forward_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ

forward_path = $home/.forward${recipient_delimiter}${extension},$home/.forward

home_mailbox = Mailbox

hopcount_limit = 50

html_directory = no

ignore_mx_lookup_error = no

import_environment = MAIL_CONFIG MAIL_DEBUG TZ XAUTHORITY DISPLAY

in_flow_delay = 1s

inet_interfaces = all

initial_destination_concurrency = 5

invalid_hostname_reject_code = 501

ipc_idle = 100

ipc_timeout = 3600

line_length_limit = 2048

lmtp_connect_timeout = 0

lmtp_data_done_timeout = 600

lmtp_data_init_timeout = 120

lmtp_data_xfer_timeout = 180

lmtp_lhlo_timeout = 300

lmtp_mail_timeout = 300

lmtp_quit_timeout = 300

lmtp_rcpt_timeout = 300

lmtp_rset_timeout = 300

lmtp_tcp_port = 24

local_command_shell =

local_destination_concurrency_limit = 2

mail_spool_directory = /var/spool/mail

mail_version = postfix-2.5.1

manpage_directory = /usr/local/man

maps_rbl_domains = rbl.maps.vix.com

maps_rbl_reject_code = 554

max_idle = 100

max_use = 100

maximal_backoff_time = 4000

maximal_queue_lifetime = 2

mydestination = localhost, localhost.mariagracia.ph, mariagracia.ph, localhost.localdomain

mydomain = mydomain.com

myhostname = mail.mydomain.com

mynetworks = 192.168.x.x/24, 192.168.y.y/24, 127.0.0.0/8, 122.54.172.52

mynetworks_style = subnet

myorigin = $myhostname

newaliases_path = /usr/bin/newaliases

non_fqdn_reject_code = 504

notify_classes = policy,resource,software,protocol,delay,bounce

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

qmgr_fudge_factor = 100

qmgr_message_active_limit = 1000

qmgr_message_recipient_limit = 10000

qmgr_message_recipient_minimum = 10

qmqpd_authorized_clients =

qmqpd_error_delay = 5s

qmqpd_timeout = 300s

readme_directory = no

relay_domains = mysql:/etc/postfix/mysql_relay_domains_maps.cf

sample_directory = /etc/postfix

sendmail_path = /usr/sbin/sendmail

service_throttle_time = 60

show_user_unknown_table_name = no

smtp_always_send_ehlo = no

smtp_bind_address =

smtp_connect_timeout = 0

smtp_data_done_timeout = 600

smtp_data_init_timeout = 120

smtp_data_xfer_timeout = 180

smtp_helo_timeout = 300

smtp_mail_timeout = 300

smtp_never_send_ehlo = no

smtp_pix_workaround_delay_time = 10s

smtp_pix_workaround_threshold_time = 500s

smtp_quit_timeout = 300

smtp_randomize_addresses = yes

smtp_rcpt_timeout = 300

smtp_skip_5xx_greeting = yes

smtp_skip_quit_response = yes

smtpd_banner = $myhostname ESMTP Postfix!

smtpd_delay_reject = yes

smtpd_error_sleep_time = 5

smtpd_etrn_restrictions =

smtpd_hard_error_limit = 100

smtpd_helo_required = yes

smtpd_helo_restrictions =

smtpd_junk_command_limit = 1000

smtpd_noop_commands =

smtpd_recipient_limit = 1000

smtpd_recipient_restrictions = permit_mynetworks,  permit_sasl_authenticated,  reject_unauth_destination,

smtpd_restriction_classes =

smtpd_sasl_auth_enable = yes

smtpd_sasl_local_domain = $myhostname

smtpd_sasl_security_options = noanonymous

smtpd_sender_login_maps =

smtpd_soft_error_limit = 10

smtpd_timeout = 300

soft_bounce = no

stale_lock_time = 500

strict_rfc821_envelopes = yes

sun_mailtool_compatibility = no

swap_bangpath = yes

syslog_facility = mail

syslog_name = postfix

unknown_address_reject_code = 450

unknown_client_reject_code = 450

unknown_hostname_reject_code = 450

verp_delimiter_filter = -=+

virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf

virtual_gid_maps = static:89

virtual_mailbox_base = /home/virtual

virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf

virtual_mailbox_limit = 51200000

virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf

virtual_minimum_uid = 89

virtual_transport = virtual

virtual_uid_maps = static:89