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centos郵件服務器如何設置反垃圾郵件

小樊
60
2025-05-10 22:23:07
欄目: 云計算

在CentOS上設置反垃圾郵件功能，通常需要使用一些專門的軟件或服務。以下是一些常見的方法和步驟：

1. 使用Postfix和SpamAssassin

Postfix是一個流行的郵件傳輸代理（MTA），而SpamAssassin是一個開源的反垃圾郵件工具。

安裝Postfix和SpamAssassin

sudo yum install postfix spamassassin spamc

配置Postfix

編輯Postfix的主配置文件 /etc/postfix/main.cf：

sudo vi /etc/postfix/main.cf

添加或修改以下配置：

# 啟用SpamAssassin
smtpd_milters = inet:localhost:783
non_smtpd_milters = inet:localhost:783

milter_default_action = accept

配置SpamAssassin

編輯SpamAssassin的配置文件 /etc/mail/spamassassin/local.cf：

sudo vi /etc/mail/spamassassin/local.cf

添加或修改以下配置：

# 啟用DNS黑名單檢查
dns_blocks_reputation_threshold = 5

# 啟用RBL檢查
rbl_threshold = 5

# 啟用內容過濾
rewrite_header Subject *****SPAM*****

重啟服務

sudo systemctl restart postfix
sudo systemctl restart spamassassin

2. 使用Exim和SpamAssassin

Exim是另一個流行的郵件傳輸代理，也可以與SpamAssassin集成。

安裝Exim和SpamAssassin

sudo yum install exim spamassassin spamc

配置Exim

編輯Exim的主配置文件 /etc/exim/exim.conf：

sudo vi /etc/exim/exim.conf

添加或修改以下配置：

# 啟用SpamAssassin
acl_smtp_rcpt:
  accept hosts = :
  accept control = *
  accept message = *
  accept auth = *
  accept hosts = 127.0.0.1
  accept hosts = ::1
  accept hosts = <your_domain>
  accept hosts = <your_IP>
  accept hosts = <your_IP_range>
  accept hosts = <your_IP_range>
  accept hosts = <your_IP_range>
  accept hosts = <your_IP_range>
  accept hosts = <your_IP_range>
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