我刚刚安装了一个Ubuntu 16.04服务器与Apache2，后缀，Dovecot，垃圾邮件刺客，MySQL和PHP。
该服务器有4个虚拟域，php应用程序需要发送邮件给运行该应用程序的域中的用户。
例如，运行在example1.com上的php应用程序需要发送邮件到[email protected]。 根据目前configuration，我的后缀用“：虚拟别名表中的用户未知”
我已经search了一个解决scheme，并尝试了几个选项，但没有解决这个问题。 任何帮助将受到感谢。
我的postconf -n给出
alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = yes biff = no broken_sasl_auth_clients = yes compatibility_level = 2 default_process_limit = 100 header_size_limit = 51200 home_mailbox = Maildir/ inet_interfaces = all inet_protocols = all mailbox_command = mailbox_size_limit = 0 message_size_limit = 10485760 mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain mydomain = example.com myhostname = server1.example.com mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mynetworks_style = subnet myorigin = /etc/mailname queue_minfree = 20971520 readme_directory = no recipient_delimiter = + relay_domains = example.com relayhost = sender_bcc_maps = hash:/etc/postfix/bcc smtp_generic_maps = hash:/etc/postfix/generic smtp_tls_note_starttls_offer = yes smtp_tls_security_level = may smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_client_connection_count_limit = 10 smtpd_client_connection_rate_limit = 30 smtpd_recipient_limit = 100 smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_local_domain = smtpd_sasl_security_options = noanonymous smtpd_tls_CAfile = /etc/ssl/certs/cacert.pem smtpd_tls_auth_only = no smtpd_tls_cert_file = /etc/ssl/certs/smtpd.crt smtpd_tls_key_file = /etc/ssl/private/smtpd.key smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_security_level = may smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_tls_session_cache_timeout = 3600s smtpd_use_tls = yes tls_random_source = dev:/dev/urandom virtual_alias_domains = example.com, example1.com, example2.com, example3.com virtual_alias_maps = hash:/etc/postfix/virtual