PVE SMTP Email 設置

Postfix 設定

安裝 libsasl2-modules

1 2	apt install libsasl2-modules -y # 協助 SMTP SASL 驗證

SMTP 設定

修改 main.cf

1	nano /etc/postfix/main.cf

將 mydestination 這行註解
將 relayhost 也註解
添加 SMTP Server 的設定
- relayhost = YOUR HOST NAME
- smtp_use_tls = no # 不使用 TLS
- smtp_sasl_auth_enable = yes # 啟用 sasl 驗證
- smtp_sasl_security_options = # 不使用安全選項
- smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd # SASL 帳號密碼位置
- smtp_tls_CAfile = /etc/ssl/certs/Entrust_Root_Certification_Authority.pem # 憑證位置
- maillog_file = /var/log/mail.log # 加入他才會生成 log 檔案
- syslog_name = postfix # postfix log 前墜

完成樣貌

# See /usr/share/postfix/main.cf.dist for a commented, more complete version

myhostname=pve.itri.org.tw

smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
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

alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
#mydestination = $myhostname, localhost.$mydomain, localhost
#relayhost =
mynetworks = 127.0.0.0/8
inet_interfaces = loopback-only
recipient_delimiter = +

compatibility_level = 2

relayhost = YOUR SMTP Server DOMAIN # SMTP Server
smtp_use_tls = no # 不使用 TLS
smtp_sasl_auth_enable = yes # 開啟 SASL 驗證
smtp_sasl_security_options = noanonymous
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd # 放置 SMTP 帳號密碼位置
smtp_tls_CAfile = /etc/ssl/certs/Entrust_Root_Certification_Authority.pem

maillog_file = /var/log/mail.log # 加入他才會生成 log 檔案
syslog_name = postfix #系統 log 名稱

SASL 帳戶設定

新增 sasl_passwd 去新增帳戶

1	nano /etc/postfix/sasl_passwd

添加內容
格式: Server Email:Password

1 2	SMTP_DOMAIN SMTP_ACCOUNT:SMTP_PASSWORD #Host # Login Account:Password

添加帳密到 map 上

1
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3

postmap hash:/etc/postfix/sasl_passwd #添加帳密到 map
chmod 600 /etc/postfix/sasl_passwd # 限制 root 可以存取
systemctl restart postfix # 刷新 postfix

執行寄信

-s 是收件者
-r 是寄件者

1	echo "Test email from Proxmox: $(hostname)" \| mail -s "Proxmox Testing 25" RECEIVER_MAIL -r SMTP_EMAIL

參考資料

Proxmox Email Notification Configuration

PVE