ubuntu

Ubuntu邮件服务器怎样配置DKIM签名

小樊
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2025-06-03 13:09:48
栏目: 云计算

在Ubuntu上配置DKIM(DomainKeys Identified Mail)签名可以帮助提高邮件的安全性和可信度。以下是一个基本的步骤指南,帮助你在Ubuntu上配置DKIM签名:

1. 安装DKIM签名工具

首先,你需要安装一个DKIM签名工具,比如opendkim

sudo apt update
sudo apt install opendkim opendkim-tools

2. 生成DKIM密钥对

使用opendkim-genkey命令生成DKIM密钥对。

sudo opendkim-genkey -t -s mail -d yourdomain.com

这将在/etc/opendkim/keys/yourdomain.com/mail.private生成私钥,在/etc/opendkim/keys/yourdomain.com/mail.txt生成公钥。

3. 配置OpenDKIM

编辑OpenDKIM的配置文件/etc/opendkim.conf

sudo nano /etc/opendkim.conf

添加或修改以下配置:

Domain yourdomain.com
Selector mail
PrivateKey /etc/opendkim/keys/yourdomain.com/mail.private

4. 配置DNS记录

在DNS管理界面中添加一个TXT记录,用于验证DKIM签名。

例如:

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8kGa1pSjbSYZVebtTRBLxBz5H4I6tj6H4i2pJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5lWVJm5l

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