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Postfix noqueue 拒絕

tag-icon • tag-icon postfix email-server dovecot smtpd
Postfix noqueue 拒絕

我擁有一個虛擬伺服器和多個網域。該伺服器主要用於網站，但我也設定了後綴和鴿舍遞送郵件。一切都按預期進行。即使對於不同的域，我也可以添加user,alias並domain在MySQL資料庫，發送和接收郵件。
每天我都會在我的 中發現這個奇怪的條目mail.log：

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>

此日誌訊息每天早上大約出現4:35伺服器時間，我真的不知道該怎麼辦。我是否以錯誤的方式配置了我的伺服器？還是這是一個機器人正在掃描我的機器？

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

答案1

這是由以下人員執行的檢查CanIt 信譽榜;它基本上確保您不是開放中繼，就好像您的伺服器已接受郵件並將其傳遞回他們的伺服器一樣，您最終會進入他們的黑名單（OpenRelay）。

您可以安全地忽略這些條目以及包含以下內容的其他條目Recipient address rejected: User unknown in virtual mailbox table;

答案2

該日誌條目看起來完全沒問題。

在技​​術層面上，您的伺服器收到一封無效收件者地址的電子郵件並拒絕它。

該位址（和每日重複）暗示有人正在故意檢查錯誤配置。也許您的虛擬伺服器提供者會進行檢查以防止意外捕獲所有網域或開放中繼的問題。

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