Hello,
Looks like one of our clients are trying to email us but their emails are
getting rejected. I'm sorry I will not display customers ip
Apr 28 11:11:12 host postfix/smtpd[48962]: warning: hostname mail.tld.com
does not resolve to address xxx.xxx.xxx
Apr 28 11:11:12 host postfix/smtpd[48962]: connect from unknown[xxx.xxx.xxx]
Apr 28 11:11:12 host postfix/smtpd[48962]: NOQUEUE: reject: RCPT from
unknown[xxx.xxx.xxx]: 450 4.1.8 <cli...@tld.com>: Sender address rejected:
Domain not found; from=<client.tld.com> to=<u...@mydomain.com> proto=ESMTP
helo=<mail.tld.com>
#postconf -n
address_verify_service_name = verify
alias_maps = hash:/usr/local/etc/postfix/aliases
allow_min_user = no
allow_untrusted_routing = no
alternate_config_directories = /usr/local/etc/postfix-out
always_add_missing_headers = no
anvil_rate_time_unit = 60s
anvil_status_update_time = 600s
biff = no
bounce_queue_lifetime = 1h
command_directory = /usr/local/sbin
config_directory = /usr/local/etc/postfix
content_filter = smtp-amavis:[127.0.0.1]:10024
daemon_directory = /usr/local/libexec/postfix
data_directory = /var/db/postfix
debug_peer_level = 2
delay_warning_time = 0h
deliver_lock_attempts = 20
disable_verp_bounces = no
disable_vrfy_command = yes
html_directory = no
in_flow_delay = 1s
local_recipient_maps = hash:/usr/local/etc/postfix/userdb
mail_owner = postfix
mailq_path = /usr/local/bin/mailq
manpage_directory = /usr/local/man
message_size_limit = 50000
mydestination = tld.com, tld2.com
myhostname = host.tld.com
mynetworks = 127.0.0.0/8, xxx.xxx.xxx/32
myorigin = tld.com
newaliases_path = /usr/local/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = no
resolve_null_domain = no
sample_directory = /usr/local/etc/postfix
sendmail_path = /usr/local/sbin/sendmail
setgid_group = maildrop
smtpd_banner = hostname.tld.com
smtpd_client_connection_count_limit = 50
smtpd_client_restrictions = hash:/usr/local/etc/postfix/access
permit_mynetworks,
reject_rbl_client zen.spamhaus.org,
reject_rbl_client bl.spamcop.net,
reject_rbl_client b.barracudacentral.org
smtpd_error_sleep_time = 0
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks,
reject_non_fqdn_hostname
smtpd_recipient_restrictions = permit_mynetworks,
reject_unauth_destination,
reject_invalid_hostname,
reject_non_fqdn_hostname,
reject_non_fqdn_sender,
reject_non_fqdn_recipient,
reject_unknown_sender_domain,
reject_unknown_recipient_domain,
smtpd_sender_restrictions = permit_mynetworks,
reject_unknown_sender_domain,
reject_non_fqdn_sender
unknown_address_reject_code = 554
unknown_client_reject_code = 554
unknown_hostname_reject_code = 554
unknown_local_recipient_reject_code = 550
unknown_relay_recipient_reject_code = 550
unverified_recipient_defer_code = 450
unverified_recipient_reject_code = 550
unverified_sender_defer_code = 450
unverified_sender_reject_code = 550
