Hello, I'm running Postfix 3.3.1 with rspamd as an antti-spam solution. I started getting this error when atempting to connect remotely via my android phone with aquamail pro as client, and do not know what it means, any help appreciated, my postconf -n is below.
Jun 27 16:45:15 hostname postfix/cleanup[55220]: 136C413982: milter-reject: END-OF-MESSAGE from cpe-xxx-xxx-xxx-xxx.xxxx.xxx.xxx.xxx[xxx.xxx.xxx.xxx]: 4.7.1 Try again later; from=<dmeh...@example.com> to=<dave.meh...@gmail.com> proto=ESMTP helo=<[192.168.1.138]> Thanks. Dave. #postconf -n allow_percent_hack = no append_dot_mydomain = no biff = no bounce_queue_lifetime = 1h bounce_template_file = /usr/local/etc/postfix/bounce.cf broken_sasl_auth_clients = no command_directory = /usr/local/sbin compatibility_level = 2 daemon_directory = /usr/local/libexec/postfix data_directory = /var/db/postfix delay_warning_time = 4h disable_vrfy_command = yes header_checks = pcre:/usr/local/etc/postfix/header_checks, regexp:/usr/local/etc/postfix/phish419.regexp html_directory = /usr/local/share/doc/postfix in_flow_delay = 1s inet_interfaces = xxx.xxx.xxx.xxx, 127.0.0.1 inet_protocols = ipv4 local_recipient_maps = $virtual_mailbox_maps mail_owner = postfix mailbox_size_limit = 0 mailq_path = /usr/local/bin/mailq manpage_directory = /usr/local/man maximal_backoff_time = 15m maximal_queue_lifetime = 1h message_size_limit = 52428800 meta_directory = /usr/local/libexec/postfix milter_default_action = accept milter_mail_macros = "i {mail_addr} {client_addr} {client_name} {auth_authen}" milter_protocol = 6 mime_header_checks = regexp:/usr/local/etc/postfix/mime_header_checks minimal_backoff_time = 5m mydestination = localhost mydomain = example.com myhostname = mail.example.com mynetworks = $config_directory/mynetworks myorigin = $mydomain newaliases_path = /usr/local/bin/newaliases non_smtpd_milters = $smtpd_milters postscreen_access_list = permit_mynetworks, cidr:/usr/local/etc/postfix/postscreen_access.cidr, cidr:/usr/local/etc/postfix/postscreen_spf_whitelist.cidr postscreen_blacklist_action = drop postscreen_dnsbl_action = drop postscreen_dnsbl_reply_map = pcre:/usr/local/etc/postfix/postscreen_dnsbl_reply_map.pcre postscreen_dnsbl_sites = zen.spamhaus.org*3 b.barracudacentral.org*2 bl.spameatingmonkey.net*2 bl.spamcop.net dnsbl.sorbs.net psbl.surriel.com bl.mailspike.net swl.spamhaus.org*-4 list.dnswl.org=127.[0..255].[0..255].0*-2 list.dnswl.org=127.[0..255].[0..255].1*-3 list.dnswl.org=127.[0..255].[0..255].[2..255]*-4 postscreen_dnsbl_threshold = 2 postscreen_dnsbl_whitelist_threshold = -1 postscreen_greet_action = drop queue_directory = /var/spool/postfix queue_run_delay = 5m readme_directory = /usr/local/share/doc/postfix recipient_delimiter = + sample_directory = /usr/local/etc/postfix sendmail_path = /usr/local/sbin/sendmail setgid_group = maildrop shlib_directory = /usr/local/lib/postfix show_user_unknown_table_name = no smtp_helo_timeout = 60s smtp_tls_cert_file = $smtpd_tls_cert_file smtp_tls_ciphers = high smtp_tls_key_file = $smtpd_tls_key_file smtp_tls_loglevel = 1 smtp_tls_mandatory_ciphers = medium smtp_tls_mandatory_exclude_ciphers = aNULL, eNULL, EXPORT, DES, RC4, MD5, PSK, aECDH, EDH-DSS-DES-CBC3-SHA, EDH-RSA-DES-CDC3-SHA, KRB5-DE5, CBC3-SHA smtp_tls_mandatory_protocols = !SSLv2,!SSLv3, !TLSv1 smtp_tls_protocols = !SSLv2,!SSLv3, !TLSv1 smtp_tls_security_level = may smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtp_use_tls = yes smtpd_banner = $myhostname ESMTP smtpd_client_restrictions = permit_mynetworks check_client_access hash:/usr/local/etc/postfix/without_ptr reject_unknown_client_hostname smtpd_data_restrictions = reject_unauth_pipelining smtpd_helo_required = yes smtpd_helo_restrictions = permit_mynetworks reject_invalid_helo_hostname reject_non_fqdn_helo_hostname reject_unknown_helo_hostname smtpd_milters = unix:/var/run/rspamd/milter.sock,inet:127.0.0.1:8472 smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination check_helo_access hash:/usr/local/etc/postfix/helo_access, ,check_sender_mx_access cidr:/usr/local/etc/postfix/bogus_mx check_sender_access hash:/usr/local/etc/postfix/safe_addresses check_sender_access hash:/usr/local/etc/postfix/auto-whtlst check_client_access cidr:/usr/local/etc/postfix/spamfarms check_client_access cidr:/usr/local/etc/postfix/sinokorea.cidr check_recipient_access mysql:/usr/local/etc/postfix/db/recipient-access.cf permit_dnswl_client list.dnswl.org=127.0.[2..14].[1..3] check_reverse_client_hostname_access pcre:/usr/local/etc/postfix/fqrdns.pcre reject_unknown_reverse_client_hostname reject_non_fqdn_sender reject_non_fqdn_helo_hostname reject_invalid_helo_hostname reject_unknown_helo_hostname reject_unlisted_recipient reject_rhsbl_client dbl.spamhaus.org reject_rhsbl_sender dbl.spamhaus.org reject_rhsbl_helo dbl.spamhaus.org check_policy_service unix:private/dovecot-quota smtpd_reject_unlisted_sender = yes smtpd_relay_restrictions = reject_non_fqdn_recipient reject_unknown_recipient_domain permit_mynetworks permit_sasl_authenticated reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = yes smtpd_sasl_local_domain = $mydomain smtpd_sasl_path = private/auth smtpd_sasl_security_options = noanonymous smtpd_sasl_type = dovecot smtpd_soft_error_limit = 3 smtpd_tls_auth_only = no smtpd_tls_cert_file = /usr/local/etc/ssl/acme/example.com/fullchain.pem smtpd_tls_ciphers = high smtpd_tls_dh1024_param_file = /usr/local/etc/postfix/dh.pem smtpd_tls_eecdh_grade = strong smtpd_tls_exclude_ciphers = aNULL, eNULL, EXPORT, DES, RC4, MD5, PSK, aECDH, EDH-DSS-DES-CBC3-SHA, EDH-RSA-DES-CDB3-SHA, KRB5-DES, CBC3-SHA smtpd_tls_key_file = /usr/local/etc/ssl/acme/private/example.com/privkey.pem smtpd_tls_loglevel = 1 smtpd_tls_mandatory_ciphers = high smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1 !TLSv1.1 TLSv1.2 smtpd_tls_protocols = !SSLv2, !SSLv3, !TLSv1 !TLSv1.1 TLSv1.2 smtpd_tls_received_header = yes smtpd_tls_security_level = may smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes smtputf8_enable = yes soft_bounce = no strict_rfc821_envelopes = yes swap_bangpath = no tls_high_cipherlist = ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256 tls_preempt_cipherlist = yes tls_ssl_options = no_ticket, no_compression unknown_address_reject_code = 554 unknown_client_reject_code = 554 unknown_hostname_reject_code = 554 unknown_local_recipient_reject_code = 550 virtual_alias_maps = proxy:mysql:/usr/local/etc/postfix/db/aliases.cf virtual_gid_maps = static:999 virtual_mailbox_base = /home/vmail virtual_mailbox_domains = proxy:mysql:/usr/local/etc/postfix/db/domains.cf virtual_mailbox_maps = proxy:mysql:/usr/local/etc/postfix/db/accounts.cf virtual_minimum_uid = 999 virtual_transport = lmtp:unix:private/dovecot-lmtp virtual_uid_maps = static:999