Per instructions at http://linuxnet.ca/postfix/dedicated_transport.html and tips by several group members, I created a "slow" transport for sending to Yahoo. I thought everything was working, but now I notice "warning: connect to transport slow: No such file or directory" in the logs.
I notice that postconf -n does not return my entries regarding the slow transport and wonder if there's an error my setup. The lines in main .cf are: slow_destination_rate_delay = 120 slow_destination_concurrency_limit = 2 slow_destination_recipient_limit = 5 slow_connection_cache_time_limit = 0 slow_never_send_ehlo = yes slow_connect_timeout = 5 /etc/postfix/transport (map created with postmap): yahoo.com slow: /etc/postfix/master.cf: # slow transport for "delicate" domains, ie. Yahoo.com slow unix n - n - 1 smtp -o syslog_name=postfix-slow -o smtp_helo_timeout=10 /etc/postfix/main.cf (postconf -n): alias_maps = hash:/etc/aliases bounce_queue_lifetime = 3h command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix debug_peer_level = 2 default_destination_concurrency_limit = 10 disable_vrfy_command = yes html_directory = no inet_interfaces = all initial_destination_concurrency = 10 mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man maximal_backoff_time = 3000s maximal_queue_lifetime = 6h minimal_backoff_time = 300s mydestination = host.domain.com, domain.com myhostname = host.domain.com mynetworks = 127.0.0.0/8, /etc/postfix/relay_ip newaliases_path = /usr/bin/newaliases.postfix non_smtpd_milters = unix:/var/run/dk-milter/dk.sock queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES sample_directory = /usr/share/doc/postfix-2.3.3/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtpd_helo_required = yes smtpd_helo_restrictions = permit_mynetworks, check_helo_access hash:/etc/postfix/helo_checks, reject_unauth_pipelining, reject_non_fqdn_hostname, reject_unknown_hostname, reject_invalid_hostname, permit smtpd_milters = unix:/var/run/dk-milter/dk.sock smtpd_recipient_restrictions = reject_non_fqdn_recipient, reject_unknown_recipient_domain, permit_mynetworks, check_recipient_access hash:/etc/postfix/roleaccount_exceptions, reject_unauth_destination, permit strict_rfc821_envelopes = yes transport_maps = hash:/etc/postfix/transport unknown_address_reject_code = 554 unknown_client_reject_code = 554 unknown_hostname_reject_code = 554 unknown_local_recipient_reject_code = 550 virtual_alias_domains = other.com other.net virtual_alias_maps = hash:/etc/postfix/virtual
