When a message is sent to our postfix MX it seems to be stripping the recipients down to 8. We have been running postfix for many years and have never had anyone complain about this but I have confirmed the issue and cannot figure out the cause.
If I send mail directly to our mailbox application (smarter mail) it does not strip the recipients, and other recipients in the e-mail who are deliver to hosts like aol.com and gmail have the full recipient list in tact. I thought it may have been a max character limit in the to field or something because 1 e-mail I received had 8 emails addresses and then the first few characters of the 9th e-mail -- but I have only seen this once. Can anyone offer any ideas? I have exhausted my knowledge PS - I realize users should probably be using some sort of distribution list for emails to 8 people but what am I to do about outside users doing that? And other mail hosts receive these messages correctly. maillog (there aren't any errors, just successfully delivery of message to the mailbox application): Feb 18 11:38:52 prajna postfix/smtp[16800]: 0556555E6A: to=<a...@d.com>, relay=192.168.1.163[192.168.1.163]:25, delay=0.02, delays=0.01/0/0/0, dsn=2.0.0, status=sent (250 OK) Feb 18 11:38:52 prajna postfix/smtp[16800]: 0556555E6A: to=<a...@d.com>, relay=192.168.1.163[192.168.1.163]:25, delay=0.02, delays=0.01/0/0/0, dsn=2.0.0, status=sent (250 OK) Feb 18 11:38:52 prajna postfix/smtp[17769]: B001F55E68: to=<a...@d.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=0.6, delays=0.49/0/0/0.1, dsn=2.0.0, status=sent (250 2.0.0 Ok, id=17678-06, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 0556555E6A) Feb 18 11:38:52 prajna postfix/smtp[17769]: B001F55E68: to=<a...@d.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=0.6, delays=0.49/0/0/0.1, dsn=2.0.0, status=sent (250 2.0.0 Ok, id=17678-06, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 0556555E6A) [r...@prajna ~]# postconf -n address_verify_map = btree:/var/lib/postfix/address_verify.map address_verify_negative_cache = yes address_verify_negative_expire_time = 3d address_verify_negative_refresh_time = 12h address_verify_positive_expire_time = 31d address_verify_positive_refresh_time = 7d address_verify_sender = postmaster alias_database = hash:/etc/postfix/aliases alias_maps = hash:/etc/postfix/aliases, hash:/usr/local/mailman/data/aliases biff = no body_checks = pcre:/etc/postfix/body_checks.regexp body_checks_size_limit = 250000 bounce_notice_recipient = some...@somewhere.com bounce_size_limit = 10000 command_directory = /usr/sbin config_directory = /etc/postfix content_filter = smtp-amavis:[127.0.0.1]:10024 daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 2 default_destination_concurrency_limit = 100 default_destination_recipient_limit = 50 default_privs = nobody default_process_limit = 200 delay_notice_recipient = some...@somewhere.com delay_warning_time = 4h disable_vrfy_command = yes double_bounce_sender = double-bounce empty_address_recipient = MAILER-DAEMON error_notice_recipient = some...@somewhere.com header_checks = pcre:/etc/postfix/header_checks.regexp header_size_limit = 256 html_directory = no ignore_mx_lookup_error = yes in_flow_delay = 1s inet_interfaces = all local_destination_concurrency_limit = 2 local_recipient_maps = mail_owner = postfix mail_spool_directory = /var/spool/mail mailbox_command = /usr/bin/procmail mailq_path = /usr/bin/mailq manpage_directory = /usr/local/man maximal_backoff_time = 1000s maximal_queue_lifetime = 5d message_size_limit = 20000000 mime_header_checks = pcre:/etc/postfix/mime_header_checks.regexp minimal_backoff_time = 300s mydestination = $myhostname, localhost.$mydomain, $mydomain, lists.$mydomain, lists.shambhala.com mydomain = mandala-designs.com mynetworks = 127.0.0.0/8, 127.0.0.1, 192.168.1.0/24, 192.168.1.200, 192.168.1.243, 192.168.1.163, 192.168.1.162, 192.168.1.151 myorigin = $mydomain newaliases_path = /usr/bin/newaliases owner_request_special = no queue_directory = /var/spool/postfix readme_directory = /etc/postfix/readme recipient_delimiter = + relay_domains = shambhala.com, hash:/etc/postfix/transport.map sample_directory = /etc/postfix sendmail_path = /usr/sbin/sendmail setgid_group = postdrop smtp_always_send_ehlo = yes smtpd_banner = $myhostname ESMTP $mail_name smtpd_client_restrictions = reject_unauth_pipelining smtpd_delay_reject = no smtpd_hard_error_limit = 20 smtpd_helo_required = yes smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unverified_recipient, reject_unknown_sender_domain, check_client_access cidr:/etc/postfix/postfix-dnswl-permit, check_sender_access pcre:/etc/postfix/ascii.pcre, check_recipient_access pcre:/etc/postfix/ascii.pcre, check_sender_access hash:/etc/postfix/myspamlist.map, check_sender_mx_access cidr:/etc/postfix/drop.cidr, check_policy_service inet:127.0.0.1:10023, check_helo_access pcre:/etc/postfix/helo_hostnames.pcre, pcre:/etc/postfix/to_recipients_bw.regexp reject_non_fqdn_helo_hostname reject_invalid_helo_hostname reject_rbl_client bl.spamcop.net, reject_rbl_client zen.spamhaus.org, reject_rbl_client dnsbl.njabl.org, reject_rbl_client dul.dnsbl.sorbs.net, reject_rhsbl_sender dsn.rfc-ignorant.org, reject_rbl_client korea.services.net, reject_rbl_client spamsources.fabel.dk, reject_rbl_client combined.njabl.org, reject_rhsbl_sender rhsbl.sorbs.net, reject_invalid_hostname, warn_if_reject reject_unknown_hostname, warn_if_reject reject_non_fqdn_hostname, reject_rhsbl_sender bulk.rhs.mailpolice.com, permit smtpd_sender_restrictions = hash:/etc/postfix/sender_access.map strict_rfc821_envelopes = yes transport_maps = hash:/etc/postfix/transport.map unknown_address_reject_code = 554 unknown_client_reject_code = 554 unknown_hostname_reject_code = 554 unknown_local_recipient_reject_code = 550 unverified_recipient_reject_code = 550 unverified_sender_reject_code = 550
