«NOQUEUE: reject: RCPT from third party.mail server: 554 5.7.1 Relay access denied»

Недавно я обновил свой производственный сервер (с Ubuntu 15 до Ubuntu 16.04.1).

Перед обновлением следил этот учебник для настройки Dovecot / Postfix и Vimbadmin.

Теперь я могу отправить электронное письмо успешно, но получить его невозможно. У меня есть это сообщение об ошибке из журнала mail.log:

mail postfix/smtpd[10751]: NOQUEUE: reject: RCPT from col004-omc2s1.hotmail.com[xxxx]: 554 5.7.1 <MON@EMAIL.COM>: Relay access denied; from=<EXPEDITEUR@hotmail.com> to=<MON@EMAIL.COM> proto=ESMTP helo=<COL004-OMC2S1.hotmail.com>

17 сен 21:00:38

Вот мой postfix conf:

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
inet_interfaces = all
inet_protocols = all
mailbox_size_limit = 0
milter_default_action = accept
milter_protocol = 2
mydestination = localhost
myhostname = mail.domain.com
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
myorigin = /etc/mailname
non_smtpd_milters = inet:localhost:12301
policy-spf_time_limit = 3600s
readme_directory = no
recipient_delimiter = +
relayhost =
smtp_tls_CAfile = /etc/letsencrypt/live/mail.domain.com/chain.pem
smtp_tls_loglevel = 1
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_error_sleep_time = 2s
smtpd_hard_error_limit = 20
smtpd_helo_required = yes
smtpd_milters = inet:localhost:12301
smtpd_recipient_restrictions = reject_non_fqdn_recipient reject_unknown_recipient_domain permit_mynetworks permit_sasl_authenticated reject_unauth_destination smtpd_relay_restriction check_policy_service unix:private/policy-spf check_policy_service inet:127.0.0.1:10023
smtpd_sasl_auth_enable = yes
smtpd_sasl_path = private/auth
smtpd_sasl_type = dovecot
smtpd_soft_error_limit = 10
smtpd_tls_auth_only = yes
smtpd_tls_cert_file = /etc/letsencrypt/live/mail.domain.com/cert.pem
smtpd_tls_key_file = /etc/letsencrypt/live/mail.domain.com/privkey.pem
smtpd_tls_protocols = !SSLv2, !SSLv3
smtpd_tls_received_header = yes
smtpd_tls_security_level = encrypt
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_tls_session_cache_timeout = 3600s
smtpd_tls_wrappermode = no
smtpd_use_tls = yes
virtual_alias_maps = mysql:/etc/postfix/mysql/virtual_alias_maps.cf
virtual_gid_maps = static:5000
virtual_mailbox_domains = mysql:/etc/postfix/mysql/virtual_domains_maps.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql/virtual_mailbox_maps.cf
virtual_transport = lmtp:unix:private/dovecot-lmtp
virtual_uid_maps = static:5000