我拥有一个vServer和多个域。 服务器主要用于网站，但我也设置了postfix和dovecot来传递邮件。 一切都按预期工作。 即使对于不同的域名，我也可以在MySQL数据库中添加user ， alias和domain ，发送和接收邮件。
每天我都在我的mail.logfind这个奇怪的条目：
postfix/smtpd[29295]: NOQUEUE: reject: RCPT from mx1.tld-mx.com[41.222.33.24]: 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown in virtual mailbox table; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<mx1.tld-mx.com>
这个日志信息每天早晨在服务器时间大约4:35出现，我真的不知道该怎么做。 我以任何错误的方式configuration我的服务器？ 或者这是一个机器人扫描我的机器？
我的main.cf
# cat /etc/postfix/main.cf # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. #myorigin = /etc/mailname smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client. myhostname = mydomain.com alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = /etc/mailname #mydestination = example.com, hostname.example.com, localhost.example.com, localhost mydestination = localhost relayhost = mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all smtpd_tls_cert_file = /root/CA/certs/server.crt smtpd_tls_key_file = /root/CA/private/server.key smtpd_tls_CAfile = /root/CA/certs/ca.crt smtpd_use_tls = yes smtpd_tls_auth_only= yes #Enabling SMTP for authenticated users, and handing off authentication to Dovecot smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smtpd_sasl_auth_enable = yes smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination, reject_unlisted_recipient #Handing off local delivery to Dovecot's LMTP, and telling it where to store mail virtual_transport = lmtp:unix:private/dovecot-lmtp #Virtual domains, users, and aliases virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf
这是由CanIt 声望列表执行的检查; 它基本上可以确保你不是一个开放的中继，就好像你的服务器已经接受了邮件并把它传递回到他们的服务器上，你将会在他们的黑名单（OpenRelay）上结束。
您可以安全地忽略这些条目以及包含Recipient address rejected: User unknown in virtual mailbox table;其他条目Recipient address rejected: User unknown in virtual mailbox table;
该日志条目看起来完全正常。
在技术层面上，您的服务器会收到一封电子邮件，查找无效的收件人地址并拒绝该地址
地址（和每日重复）意味着有人故意检查错误configuration。 也许你的vServer提供商检查，以防止意外全域或开放的继电器的问题。