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Date: Fri, 26 Jul 2024 17:44:51 +0800
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Signed-off-by: 萌森 <qyg2297248353@163.com>
---
 apps/mailserver/14.0.0/data.yml |  7 +++++++
 apps/mailserver/README.md       | 16 ++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/apps/mailserver/14.0.0/data.yml b/apps/mailserver/14.0.0/data.yml
index 7341594a..8413cd22 100644
--- a/apps/mailserver/14.0.0/data.yml
+++ b/apps/mailserver/14.0.0/data.yml
@@ -75,6 +75,13 @@ additionalProperties:
       required: false
       rule: paramPort
       type: number
+    - default: "domain.com"
+      edit: true
+      envKey: HOSTNAME_FQDN
+      labelZh: 邮件服务器域名
+      labelEn: Mail server domain name
+      required: true
+      type: text
     - default: "postmaster@domain.com"
       edit: true
       envKey: POSTMASTER_ADDRESS
diff --git a/apps/mailserver/README.md b/apps/mailserver/README.md
index 61d64f67..97561db2 100644
--- a/apps/mailserver/README.md
+++ b/apps/mailserver/README.md
@@ -40,6 +40,22 @@ SQL 数据库。其形象以 "保持简单和版本化 "为口号。
 
 将证书文件放置在 持久化目录的 `certs` 目录下，文件名为 `public.crt` 和 `private.key`。
 
+### 端口占用检查
+
+- `25` SMTP 端口
+
+```sh
+netstat -tuln | grep 25
+```
+
+停止Linux 邮件服务 `postfix` 服务, 释放 25 端口, 避免端口占用。
+
+```sh
+systemctl status postfix.service
+systemctl stop postfix.service
+systemctl disable postfix.service
+```
+
 ## 安装完成
 
 首次启动至少要添加一个账户，您有两分钟的时间来执行此操作。请在容器终端中运行以下命令。