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Subject: Mail loop probs...
From: Max Lock (maxtele2.co.uk)
Date: Thu Nov 02 2000 - 04:10:14 CST

 Hi folks,

 I'm experiencing a mail looping problem that's `appeared out of
nowhere' Everything is working fine for all of the multiple domains we
host mail for except one. everytime anyone sends mail to any user in
this domain I get the error <usereml-uk.com>: mail for eml-uk.com loops
back to myself

 I've read the docs but I'm unfamiliar with mail systems, postconf -d
output is attached and the lines in the virtual file are the following:

virtual:eml.tele2.co.uk x
virtual:eml.tele2.co.uk eml
virtual:emlltd.tele2.co.uk x
virtual:emlltd.tele2.co.uk emlltd

 there is no eml-uk.com entry as we are just a secondary smtp forwarder
and not actually hosting eml-uk.com's mail.

 Relevant DNS entries look like this:

                        1H IN MX 10 mailgate
                        1H IN MX 30 mail.tele2.co.uk.
                        1H IN MX 50 relay-1.mail.demon.net.
mailgate 1D IN A 212.19.79.19

 Any help gratefully received!!!

 -Thanks Max. 

-- 
Max Lock, System Administrator, TELE2 uk.

2bounce_notice_recipient = postmaster access_map_reject_code = 554 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 always_bcc = append_at_myorigin = yes append_dot_mydomain = yes best_mx_transport = biff = yes bounce_notice_recipient = postmaster bounce_size_limit = 50000 canonical_maps = command_directory = $program_directory command_expansion_filter = 1234567890!%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ command_time_limit = 1000 daemon_directory = $program_directory daemon_timeout = 18000 debug_peer_level = 2 debug_peer_list = default_database_type = hash default_destination_concurrency_limit = 10 default_destination_recipient_limit = 50 default_privs = nobody default_process_limit = 50 default_transport = smtp defer_transports = delay_notice_recipient = postmaster delay_warning_time = 0 deliver_lock_attempts = 5 deliver_lock_delay = 1 disable_dns_lookups = no disable_vrfy_command = no 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 fallback_relay = fallback_transport = fork_attempts = 5 fork_delay = 1 forward_expansion_filter = 1234567890!%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ forward_path = $home/.forward${recipient_delimiter}${extension},$home/.forward hash_queue_depth = 2 hash_queue_names = defer header_checks = header_size_limit = 102400 home_mailbox = hopcount_limit = 50 ignore_mx_lookup_error = no inet_interfaces = all initial_destination_concurrency = 5 invalid_hostname_reject_code = 501 ipc_idle = 100 ipc_timeout = 3600 line_length_limit = 2048 local_command_shell = local_destination_concurrency_limit = $default_destination_concurrency_limit local_destination_recipient_limit = $default_destination_recipient_limit local_recipient_maps = local_transport = local luser_relay = mail_name = Postfix mail_owner = postfix mail_spool_directory = /var/spool/mail mail_version = Postfix-19991231-pl02 mailbox_command = mailbox_transport = maps_rbl_domains = rbl.maps.vix.com maps_rbl_reject_code = 554 masquerade_domains = masquerade_exceptions = max_idle = 100 max_use = 100 maximal_backoff_time = 4000 maximal_queue_lifetime = 5 message_size_limit = 10240000 minimal_backoff_time = 1000 mydestination = $myhostname, localhost.$mydomain mydomain = tele2.co.uk myhostname = scutter.tele2.co.uk mynetworks = 127.0.0.0/8 212.19.64.0/24 myorigin = $myhostname non_fqdn_reject_code = 504 notify_classes = resource,software owner_request_special = yes prepend_delivered_header = command, file, forward process_id_directory = pid program_directory = /usr/libexec/postfix propagate_unmatched_extensions = canonical, virtual qmgr_fudge_factor = 100 qmgr_message_active_limit = 1000 qmgr_message_recipient_limit = 10000 queue_directory = /var/spool/postfix queue_minfree = 0 queue_run_delay = 1000 recipient_canonical_maps = recipient_delimiter = reject_code = 554 relay_domains = $mydestination relay_domains_reject_code = 554 relayhost = relocated_maps = sender_canonical_maps = service_throttle_time = 60 smtp_connect_timeout = 0 smtp_data_done_timeout = 600 smtp_data_init_timeout = 120 smtp_data_xfer_timeout = 180 smtp_destination_concurrency_limit = $default_destination_concurrency_limit smtp_destination_recipient_limit = $default_destination_recipient_limit smtp_helo_timeout = 300 smtp_mail_timeout = 300 smtp_quit_timeout = 300 smtp_rcpt_timeout = 300 smtp_skip_4xx_greeting = no smtp_skip_quit_response = yes smtpd_banner = $myhostname ESMTP $mail_name smtpd_client_restrictions = smtpd_delay_reject = yes smtpd_error_sleep_time = 5 smtpd_etrn_restrictions = smtpd_hard_error_limit = 100 smtpd_helo_required = no smtpd_helo_restrictions = smtpd_recipient_limit = 1000 smtpd_recipient_restrictions = permit_mynetworks,check_relay_domains smtpd_restriction_classes = smtpd_sender_restrictions = smtpd_soft_error_limit = 10 smtpd_timeout = 300 soft_bounce = no stale_lock_time = 500 strict_rfc821_envelopes = no sun_mailtool_compatibility = no swap_bangpath = yes transport_maps = transport_retry_time = 60 trigger_timeout = 10 unknown_address_reject_code = 450 unknown_client_reject_code = 450 unknown_hostname_reject_code = 450 virtual_maps =