close
step.1 產生 SMTP 憑證
# genkey mail.xxx.xxx.com
建立的憑證位置 /etc/pki/tls/certs/mail.xxx.xxx.com.cert # 公鑰 /etc/pki/tls/private/mail.xxx.xxx.com.key # 私鑰
step.2 設定 main.cf
/etc/postfix/main.cf smtpd_use_tls = yes smtpd_tls_auth_only = yes smtpd_tls_key_file = /etc/pki/tls/private/shazimail.twbbs.org.key smtpd_tls_cert_file = /etc/pki/tls/certs/shazimail.twbbs.org.crt smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_CAfile = $smtpd_tls_cert_file smtpd_tls_session_cache_timeout = 3600s \\ CAfile 為要提供 CA Server 的憑證,這邊引用 cert file 的路徑 \\ smtpd_tls_auth_only 強制 SASL 走 TLS 協定將所有資訊加密
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