Debian消息系统中如何实现权限控制

<code>sudo adduser username
sudo groupadd mailusers
sudo usermod -aG mailusers username</code>

<code># 在main.cf中启用ACL
smtpd_relay_restrictions = check_client_access hash:/etc/postfix/access
<h1>创建/etc/postfix/access文件并添加规则</h1><p>echo "127.0.0.1 OK" | sudo tee -a /etc/postfix/access
echo "example.com OK" | sudo tee -a /etc/postfix/access</p><h1>生成数据库文件</h1><p>sudo postmap /etc/postfix/access</p><h1>重新加载Postfix配置</h1><p>sudo systemctl reload postfix</code>

<code>sudo chown -R vmail:vmail /var/mail/vhosts/example.com
sudo chmod -R 755 /var/mail/vhosts/example.com</code>

<code># 在dovecot.conf中启用PAM认证
auth_mechanisms = plain login</p><h1>配置PAM服务</h1><p>sudo nano /etc/pam.d/dovecot</code>

<code>sudo ufw allow 25/tcp  # SMTP
sudo ufw allow 110/tcp # POP3
sudo ufw allow 143/tcp # IMAP
sudo ufw allow 587/tcp # Submission</code>

<code># 在main.cf中配置日志级别
debug_peer_level = 2</p><h1>查看日志</h1><p>sudo tail -f /var/log/mail.log</code>