On Wed, Dec 02, 2015 at 12:28:33PM -0500, Bill Cole wrote: > >Questions: > >1. Why is this message getting a 450 message? Is the outlook mail server > >speaking out of turn here? > > Since you didn't bother providing 'postconf -n' output, which would provide > useful clues, we are left with making random guesses... > > My random guess: you're doing sender verification. Don't. It's broken in > concept and especially broken operationally if you want to communicate with > people using MS products.
Hi Bill, Thanks for your reply. Attached is my postconf -n output. The only smtpd_sender_restrictions we have in place are: "reject_unknown_sender_domain" thanks, Bryan -- Bryan K. Walton 319-337-3877 Linux Systems Administrator Leepfrog Technologies, Inc
address_verify_cache_cleanup_interval = 7d address_verify_map = hash:$data_directory/verify_cache address_verify_negative_expire_time = 7d address_verify_negative_refresh_time = 3h alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases biff = no command_directory = /usr/sbin compatibility_level = 2 content_filter = amavisfeed:[127.0.0.1]:10024 daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix delay_warning_time = 4h html_directory = no inet_interfaces = all inet_protocols = ipv4 local_recipient_maps = mail_owner = postfix mailbox_size_limit = 0 mailq_path = /usr/bin/mailq manpage_directory = /usr/share/man message_size_limit = 0 meta_directory = /etc/postfix mydestination = localhost, localhost.localdomain, shenandoah.leepfrog.com myhostname = shenandoah.leepfrog.com mynetworks = 10.1.88.51 myorigin = $myhostname newaliases_path = /usr/bin/newaliases postscreen_access_list = permit_mynetworks, hash:/etc/postfix/postscreen_access postscreen_bare_newline_action = ignore postscreen_bare_newline_enable = yes postscreen_dnsbl_action = enforce postscreen_dnsbl_reply_map = pcre:/etc/postfix/postscreen_dnsbl_reply.pcre postscreen_dnsbl_sites = zen.spamhaus.org*2 bl.spamcop.net*1 b.barracudacentral.org*1 bl.mailspike.net*1 dnsbl.inps.de=127.0.0.2*1 hostkarma.junkemailfilter.com=127.0.0.2*1 hostkarma.junkemailfilter.com=127.0.0.4*1 list.dnswl.org=127.0.[0..255].0*-1 list.dnswl.org=127.0.[0..255].1*-2 list.dnswl.org=127.0.[0..255].2*-3 list.dnswl.org=127.0.[0..255].3*-4 wl.mailspike.net=127.0.0.[18;19;20]*-2 hostkarma.junkemailfilter.com=127.0.0.1*-2 postscreen_dnsbl_threshold = 2 postscreen_dnsbl_ttl = 1h postscreen_dnsbl_whitelist_threshold = -2 postscreen_greet_action = enforce postscreen_non_smtp_command_action = drop postscreen_non_smtp_command_enable = yes postscreen_pipelining_action = enforce postscreen_pipelining_enable = yes queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-3.0.3/README_FILES recipient_delimiter = + relay_domains = hash:/etc/postfix/relaydomains relayhost = sample_directory = /usr/share/doc/postfix-3.0.3/samples sendmail_path = /usr/sbin/sendmail setgid_group = postdrop shlib_directory = no smtp_tls_CAfile = /etc/ssl/certs/ca-bundle.crt smtp_tls_loglevel = 1 smtp_tls_mandatory_protocols = !SSLv2,!SSLv3 smtp_tls_note_starttls_offer = yes smtp_tls_protocols = !SSLv2,!SSLv3 smtp_tls_security_level = may smtpd_banner = $myhostname ESMTP $mail_name smtpd_data_restrictions = reject_unauth_pipelining smtpd_helo_required = yes smtpd_helo_restrictions = permit_mynetworks, reject_invalid_helo_hostname smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_unknown_recipient_domain, check_recipient_access hash:/etc/postfix/access reject_unverified_recipient smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, smtpd_sender_restrictions = reject_unknown_sender_domain smtpd_tls_CAfile = /etc/ssl/certs/ca-bundle.crt smtpd_tls_auth_only = yes smtpd_tls_cert_file = /etc/ssl/certs/lfwildcard-combined.crt smtpd_tls_dh1024_param_file = /etc/postfix/dh2048.pem smtpd_tls_dh512_param_file = /etc/postfix/dh512.pem smtpd_tls_eecdh_grade = strong smtpd_tls_exclude_ciphers = aNULL, IDEA, eNULL, EXPORT, DES, RC4, MD5, PSK, aECDH, EDH-DSS-DES-CBC3-SHA, EDH-RSA-DES-CDC3-SHA, KRB5-DE5, CBC3-SHA smtpd_tls_key_file = /etc/ssl/certs/lfwildcard.key smtpd_tls_loglevel = 1 smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3 smtpd_tls_protocols = !SSLv2,!SSLv3 smtpd_tls_received_header = yes smtpd_tls_security_level = may smtpd_use_tls = yes strict_rfc821_envelopes = yes tls_preempt_cipherlist = yes transport_maps = hash:/etc/postfix/transport unverified_recipient_reject_code = 550
