当一封电子邮件被发送到一个不存在的域或收件人时，我希望发件人收到来自mailer-daemon的即时电子邮件，通知收件人不存在。
实际上，我的系统上发生的事情是电子邮件进入延期队列，并保持在configuration中指定的时间。 当我在队列中的30分钟后设置delay_warning_time = 30m ，发送者得到一个通知，但这不是我想要的非现有地址。 我想要的是立即拒绝电子邮件，并通知发件人。
有谁知道我在做什么错？ 非常感谢
目前，不存在收件人的电子邮件站在后缀队列中：
＃mailq -Queue ID- - 大小 - ----到达时间-----收件人------- AA6CA48DCC 1496 Wed Feb 12 12:56:36 [email protected] （连接到mx.email-srv.com [199.231.85.98]：25：连接超时） [email protected] 6FF9948DFF 1498 Wed Feb 12 13:07:04 [email protected] （连接到mx.email-srv.com [199.231.85.98]：25：连接超时） [email protected]
这是我的Postfixconfiguration：
2bounce_notice_recipient = $ delay_notice_recipient alias_database = hash：/ etc / postfix / aliases alias_maps = hash：/ etc / postfix / aliases broken_sasl_auth_clients = no command_directory = / usr / sbin config_directory = / etc / postfix content_filter = amavis：[127.0.0.1]：10024 daemon_directory = / usr / lib / postfix data_directory = / var / lib / postfix debug_peer_level = 2 debugger_command = PATH = / bin：/ usr / bin：/ usr / local / bin：/ usr / X11R6 / bin ddd $ daemon_directory / $ process_name $ process_id＆sleep 5 delay_notice_recipient = admin delay_warning_time = 30m disable_vrfy_command =是 header_checks = regexp：/ etc / postfix / header_checks html_directory = no inet_interfaces = all inet_protocols = all local_recipient_maps = mail_owner =后缀 mailq_path = /usr/bin/mailq.postfix manpage_directory = / usr / share / man masquerade_domains = mail.domain.es mail.domain.com hostname.domain.es hostname.domain.com maximal_backoff_time = 8000s maximal_queue_lifetime = 5d milter_default_action =接受 milter_protocol = 2 minimal_backoff_time = 1000s mydestination = mydomain = domain.es myhostname = mail.domain.es mynetworks_style = host myorigin = domain.es newaliases_path = /usr/bin/newaliases.postfix non_smtpd_milters = $ smtpd_milters queue_directory = / var / spool / postfix readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES relayhost = relocated_maps = mysql：/etc/postfix/mysql_relocated.cf sample_directory = /usr/share/doc/postfix-2.6.6/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtp_helo_timeout = 60s smtp_tls_CAfile = /etc/ssl/certs/sf_bundle.crt smtp_tls_note_starttls_offer =是 smtp_tls_security_level =可能 smtp_use_tls =是 smtpd_banner = $ myhostname ESMTP $ mail_name smtpd_client_restrictions = reject_rbl_client sbl.spamhaus.org，reject_rbl_client blackholes.easynet.nl，reject_rbl_client dnsbl.njabl.org smtpd_data_restrictions = reject_unauth_pipelining smtpd_delay_reject =是 smtpd_hard_error_limit = 12 smtpd_helo_required =是 smtpd_helo_restrictions = permit_mynetworks，permit_sasl_authenticated，warn_if_reject reject_non_fqdn_hostname，reject_invalid_hostname，许可 smtpd_milters = inet：localhost：8891 smtpd_recipient_limit = 16 smtpd_recipient_restrictions = reject_unauth_pipelining，permit_mynetworks，reject_non_fqdn_recipient，reject_unknown_recipient_domain，reject_unauth_destination，reject_unknown_helo_hostname，permit_sasl_authenticated，permit smtpd_sasl_auth_enable =是 smtpd_sasl_local_domain = smtpd_sasl_security_options = noanonymous smtpd_sender_restrictions = permit_sasl_authenticated，permit_mynetworks，warn_if_reject reject_non_fqdn_sender，reject_unknown_sender_domain，reject_unauth_pipelining，permit smtpd_soft_error_limit = 3 smtpd_tls_cert_file = /etc/ssl/certs/domain.es.crt smtpd_tls_key_file = /etc/ssl/private/domain.key smtpd_tls_loglevel = 1 smtpd_tls_received_header =是 smtpd_tls_security_level =可能 smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev：/ dev / urandom transport_maps = mysql：/etc/postfix/mysql_transport.cf transport_retry_time = 30s unknown_local_recipient_reject_code = 450 virtual_alias_maps = mysql：/etc/postfix/mysql_alias.cf virtual_gid_maps = static：5000 virtual_mailbox_base = / var / spool / mail / virtual virtual_mailbox_domains = mysql：/etc/postfix/mysql_domains.cf virtual_mailbox_maps = mysql：/etc/postfix/mysql_mailbox.cf virtual_uid_maps = static：5000
postfix应该如何知道电子邮件是否不存在，或者如果远程服务器不可用（如你的队列卡住的邮件似乎是这种情况）。 通常情况下，postfix会尝试发送邮件，但是除非它从远程服务器得到确定的回答，通常550回复（450范围意味着暂时不可用），postfix无法确定邮件是否存在，或者如果存在是一些其他问题，可能会允许电子邮件稍后成功交付。