The email address to which we are sending is "u...@mmm.com". Output of my postconf -n:
>>> alias_database = hash:/etc/postfix/aliases alias_maps = hash:/etc/postfix/aliases body_checks = regexp:/etc/postfix/body_checks command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix debug_peer_level = 1 default_destination_concurrency_limit = 10 default_privs = nobody header_checks = regexp:/etc/postfix/header_checks html_directory = no inet_interfaces = all local_destination_concurrency_limit = 2 mail_owner = postfix mailbox_command = /usr/bin/procmail mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, $mydomain, /etc/postfix/domains mydomain = ecmarket.com myhostname = ecmailer2.ecmarket.com mynetworks = /etc/postfix/relay-domains myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix notify_classes = delay, resource, software queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.2.10/README_FILES relay_domains = $mydestination, /etc/postfix/relay-domains sample_directory = /usr/share/doc/postfix-2.2.10/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtp_enforce_tls = no smtp_tls_loglevel = 2 smtp_use_tls = yes smtpd_client_restrictions = permit_mynetworks, check_client_access hash:/etc/postfix/access_clientip, reject_non_fqdn_hostname, reject_invalid_hostname smtpd_helo_required = yes smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/access, reject_non_fqdn_sender, reject_rbl_client bl.spamcop.net smtpd_tls_CApath = /etc/postfix/CERTS smtpd_tls_cert_file = /etc/postfix/wildcard.conexiom.net-2011.cer smtpd_tls_key_file = /etc/postfix/wildcardKey-nopass.pem smtpd_tls_loglevel = 2 smtpd_tls_received_header = yes smtpd_tls_security_level = may smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev:/dev/urandom unknown_local_recipient_reject_code = 450 <<< Thank you, -Andreas -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Wietse Venema Sent: Monday, September 12, 2011 12:07 PM To: Postfix users Subject: Re: Postfix Question: strange issue with mx record lookup Andreas Freyvogel: > I have a bit of an odd problem and hoped you might be able to offer some > assistance or point me in the right direction. > > Yesterday, my server was unable to send emails to 3M (u...@mmm.com). > > The logs shows: > "status=deferred (delivery temporarily suspended: connect to > mmm.com[192.28.34.26]" mmm.com is not an MX host for 3M.com. I therefore suspect that you have a non-default configuration that forces Postfix to look up MMM.com instead of 3M.com. This would be a good time to provide "postconf -n" command output. Wietse
