查看“Maddy”的源代码

Maddy 是 Golang 写的易于配置的邮箱收发服务器，集成了 IMAP 和 SMTP 以及 DKIM ，十分方便。
==安装==
<pre>$ yay -S maddy</pre>这里我使用 sqlite<pre># pacman -S sqlite</pre>
==配置文件==
===Maddy 配置===
<pre>$ vim /etc/maddy/maddy.conf</pre>内容如下<pre>## Maddy Mail Server - default configuration file (2021-08-16)
# Suitable for small-scale deployments. Uses its own format for local users DB,
# should be managed via maddyctl utility.
#
# See tutorials at https://maddy.email for guidance on typical
# configuration changes.
#
# See manual pages (also available at https://maddy.email) for reference
# documentation.

# ----------------------------------------------------------------------------
# Base variables

$(hostname) = DOMAIN
$(primary_domain) = DOMAIN
$(local_domains) = $(primary_domain)

#tls file /etc/maddy/certs/$(hostname)/fullchain.pem /etc/maddy/certs/$(hostname)/privkey.pem
tls file /etc/letsencrypt/live/$(local_domains)/fullchain.pem /etc/letsencrypt/live/$(local_domains)/privkey.pem
# ----------------------------------------------------------------------------
# Local storage &amp; authentication

# pass_table provides local hashed passwords storage for authentication of
# users. It can be configured to use any &quot;table&quot; module, in default
# configuration a table in SQLite DB is used.
# Table can be replaced to use e.g. a file for passwords. Or pass_table module
# can be replaced altogether to use some external source of credentials (e.g.
# PAM, /etc/shadow file).
#
# If table module supports it (sql_table does) - credentials can be managed
# using 'maddyctl creds' command.

auth.pass_table local_authdb {
    table sql_table {
        driver sqlite3
        dsn credentials.db
        table_name passwords
    }
}

# imapsql module stores all indexes and metadata necessary for IMAP using a
# relational database. It is used by IMAP endpoint for mailbox access and
# also by SMTP &amp; Submission endpoints for delivery of local messages.
#
# IMAP accounts, mailboxes and all message metadata can be inspected using
# imap-* subcommands of maddyctl utility.

storage.imapsql local_mailboxes {
    driver sqlite3
    dsn imapsql.db
}

# ----------------------------------------------------------------------------
# SMTP endpoints + message routing

hostname $(hostname)

table.chain local_rewrites {
    optional_step regexp &quot;(.+)\+(.+)@(.+)&quot; &quot;$1@$3&quot;
    optional_step static {
        entry postmaster postmaster@$(primary_domain)
    }
    optional_step file /etc/maddy/aliases
}

msgpipeline local_routing {
    # Insert handling for special-purpose local domains here.
    # e.g.
    # destination lists.example.org {
    #     deliver_to lmtp tcp://127.0.0.1:8024
    # }

    destination postmaster $(local_domains) {
        modify {
            replace_rcpt &amp;local_rewrites
        }

        deliver_to &amp;local_mailboxes
    }

    default_destination {
        reject 550 5.1.1 &quot;User doesn't exist&quot;
    }
}

smtp tcp://0.0.0.0:25 {
    limits {
        # Up to 20 msgs/sec across max. 10 SMTP connections.
        all rate 20 1s
        all concurrency 10
    }

    dmarc yes
    check {
        require_mx_record
        dkim
        spf
    }

    source $(local_domains) {
        reject 501 5.1.8 &quot;Use Submission for outgoing SMTP&quot;
    }
    default_source {
        destination postmaster $(local_domains) {
            deliver_to &amp;local_routing
        }
        default_destination {
            reject 550 5.1.1 &quot;User doesn't exist&quot;
        }
    }
}
submission tls://[::]:465 {
#submission tls://0.0.0.0:465 tcp://0.0.0.0:587 {
    limits {
        # Up to 50 msgs/sec across any amount of SMTP connections.
        all rate 50 1s
    }

    auth &amp;local_authdb

    source $(local_domains) {
        check {
            authorize_sender {
                prepare_email &amp;local_rewrites
                user_to_email identity
            }
        }

        destination postmaster $(local_domains) {
            deliver_to &amp;local_routing
        }
        default_destination {
            modify {
                dkim $(primary_domain) $(local_domains) default
            }
            deliver_to &amp;remote_queue
        }
    }
    default_source {
        reject 501 5.1.8 &quot;Non-local sender domain&quot;
    }
}

target.remote outbound_delivery {
    limits {
        # Up to 20 msgs/sec across max. 10 SMTP connections
        # for each recipient domain.
        destination rate 20 1s
        destination concurrency 10
    }
    mx_auth {
        dane
        mtasts {
            cache fs
            fs_dir mtasts_cache/
        }
        local_policy {
            min_tls_level none
            min_mx_level none
        }
    }
}

target.queue remote_queue {
    target &amp;outbound_delivery

    autogenerated_msg_domain $(primary_domain)
    bounce {
        destination postmaster $(local_domains) {
            deliver_to &amp;local_routing
        }
        default_destination {
            reject 550 5.0.0 &quot;Refusing to send DSNs to non-local addresses&quot;
        }
    }
}

# ----------------------------------------------------------------------------
# IMAP endpoints
imap tls://[::]:993 {
#imap tls://0.0.0.0:993 tcp://0.0.0.0:143 {
    auth &amp;local_authdb
    storage &amp;local_mailboxes
}</pre>主要修改 <code>min_tls_level</code> 为 <code>none</code> 为了 office365/outlook 通讯。还有<code>hostname</code> <code>primary_domain</code> 以及 <code>tls</code> 文件位置

信件存储在 <code>/var/lib/maddy/messages</code> sqlite 存储在 <code>/var/lib/maddy/</code>

=== SSL key ===
 # setfacl -R -m u:maddy:rX /etc/letsencrypt/{live,archive}

===systemd 配置===
<pre>$ vim /usr/lib/systemd/system/maddy.service
$ vim /usr/lib/systemd/system/maddy@.service</pre>可以修改成你需要的，但是如果要修改为 <code>root</code> 那么<pre>User=root
Group=root
#AmbientCapabilities=CAP_NET_BIND_SERVICE
#CapabilityBoundingSet=CAP_NET_BIND_SERVICE
</pre>之后<pre># systemctl enable maddy
# systemctl start maddy</pre>
===用户配置===
<pre>$ maddyctl creds create/password &lt;username@example.com&gt; --password &lt;YourPassword&gt; #创建用户/更改用户密码
$ maddyctl creds create #删除用户
$ maddyctl creds list # 查看你刚创建的用户名

$ maddyctl imap-acct create/remove &lt;username@example.com&gt; # 创建/删除一个邮件储存账户
$ maddyctl imap-acct list # 查看刚创建的 imap 储存账户

$ maddyctl imap-mboxes list &lt;username@example.com&gt; # 可以看到该账户下有哪些分类
$ maddyctl imap-msgs list &lt;username@example.com&gt; &lt;INBOX&gt; # 可以查看当前账户对应分类接收到的邮件，一般收件在 INBOX 中</pre>
==端口==
以下端口需要开放
*25：通信
*465: SMTP
*993: IMAP
==解析==
===A 记录===
*type: A
*host: 根据你的 domain，二级域名填写二级域名的名称，一级域名空或者@/*
*value: IP
===MX 记录===
*type: MX
*host: 根据你的 domain，二级域名填写二级域名的名称，一级域名空或者@/*
*value: domain
==送信优化==
===DKIM===
在 <code>/var/lib/maddy/dkim_keys</code> 下的 .dns 文件存在，文件内容即是 DKIM 解析

添加解析
*type: TXT
*host: default._domainkey
*value: .dns 内容
===SPF===
添加解析
*type: TXT
*host: 根据你的 domain，二级域名填写二级域名的名称，一级域名空或者@/*
*value: v=spf1 mx ~all
==收信优化==
===DMARC===
*type: TXT
*host: _dmarc
*value: v=DMARC1; p=quarantine;
p 可以为 <code>none</code> <code>quarantine</code> <code>reject</code> 分别 接受不处理、接受并处理、拒绝 没经过 DMARC 检验的邮件
[[分类:Server]]