Php iOS企业部署：单击itms服务链接将导致“；无法连接到[域]”；错误

我已在服务器的根文件夹中上载了以下文件

appname.ipa

appname.plist

appname.png

index.php

<a href="itms-services://?action=download-manifest&amp;url=https://subdomain.domain.com/appname.plist"> click this link to install </a>

在appname.plist文件中，列出以下内容：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>items</key>
    <array>
        <dict>
            <key>assets</key>
            <array>
                <dict>
                    <key>kind</key>
                    <string>software-package</string>
                    <key>url</key>
                    <string>https://subdomain.domain.com/appname.ipa</string>
                </dict>
            </array>
            <key>metadata</key>
            <dict>
                <key>bundle-identifier</key>
                <string>com.appname.enterprise</string>
                <key>bundle-version</key>
                <string>1.0</string>
                <key>kind</key>
                <string>software</string>
                <key>title</key>
                <string>Appname</string>
            </dict>
        </dict>
    </array>
</dict>
</plist>

我也有SSL证书

这是因为我在使用子域吗

application/octet-stream        bin lha lzh exe class so dll img iso ipa
application/xml plist
text/xml                    xml plist