我每天收到大约50封被拒绝的电子邮件，因为发送电子邮件地址中存在拼写错误，并且正在reject_unknown_sender_domain ：
Jul 10 12:21:31 serverb3 postfix/smtpd[6647]: NOQUEUE: reject: RCPT from smtp.correctly-spelt-domain.co.uk[XXXX]: 450 4.1.8 <[email protected]>: Sender address rejected: Domain not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<smtp.correctly-spelt-domain.co.uk>
我已经将[email protected] OK添加到/etc/postfix/sender_access ，运行/etc/postfix/sender_access postmap /etc/postfix/sender_access并重新启动postfix。
尽pipecheck_sender_access hash:/etc/postfix/sender_access出现在我的smtpd_recipient_restrictions列表之前reject_unknown_sender_domain电子邮件仍然被拒绝的原因。 为什么是这个，我该如何解决？
Postfix v2.11.3
输出postconf -n ：
alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases biff = no command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/lib/postfix disable_vrfy_command = yes home_mailbox = Mail/ mailbox_command = /usr/lib/dovecot/deliver mailbox_size_limit = 0 message_size_limit = 20480000 mydestination = b3.localdomain, localhost.localdomain, localhost, /etc/postfix/bubbadomains, $myhostname mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 recipient_delimiter = + relayhost = smtp.gmail.com sender_bcc_maps = hash:/etc/postfix/sender_bcc smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = noanonymous smtp_tls_session_cache_database = btree:${queue_directory}/smtp_scache smtp_use_tls = yes smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) smtpd_helo_required = yes smtpd_recipient_restrictions = permit_mynetworks check_sender_access hash:/etc/postfix/sender_access reject_unauth_destination reject_unauth_pipelining reject_invalid_hostname reject_non_fqdn_sender reject_unknown_sender_domain reject_non_fqdn_recipient reject_unknown_recipient_domain reject_rbl_client bl.spamcop.net reject_rbl_client zen.spamhaus.org reject_rbl_client dul.dnsbl.sorbs.net permit smtpd_reject_unlisted_sender = yes smtpd_relay_restrictions = permit_mynetworks reject_unauth_destination reject_unauth_pipelining reject_invalid_hostname reject_non_fqdn_sender reject_unknown_sender_domain reject_non_fqdn_recipient reject_unknown_recipient_domain check_sender_access hash:/etc/postfix/sender_access reject_rbl_client bl.spamcop.net reject_rbl_client zen.spamhaus.org reject_rbl_client dul.dnsbl.sorbs.net permit smtpd_tls_cert_file = /etc/letsencrypt/live/mydomain.co.uk/fullchain.pem smtpd_tls_key_file = /etc/letsencrypt/live/mydomain.co.uk/privkey.pem smtpd_tls_session_cache_database = btree:${queue_directory}/smtpd_scache smtpd_use_tls = yes unknown_local_recipient_reject_code = 550
PS。 我也试图通过联系有问题的域名的所有者并通知他们来解决根本原因。 我不屏住呼吸，他们会修好它。
我从Postfix邮件列表中得到了一个答案：
您在“smtpd_recipient_restrictions”之前评估的“smtpd_relay_restrictions”中有“reject_unknown_sender_domain”。 请注意，拒绝是延迟到RCPT TO。