Php 重写web.config中的wordpress paramlink不适用于IIS 8上的辅助域

Wordpress网站托管在IIS 8上，
一个主域和另一个域
比如说：maindomain.com和anotherdomain.com

物理路径：acb/maindomain（主域）和
物理路径：acb/maindomain/anotherdomain.com（用于另一个域）

maindoman.com使用任何paramlink结构

下面是maindoman.com/web.config文件代码

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
    <rewrite>
      <rules>
        <!-- for maindomain -->
        <rule name="maindomain" patternSyntax="Wildcard">
                <match url="*"/>
                    <conditions>
                        <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true"/>
                        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
                    </conditions>
<action type="Rewrite" url="index.php"/>
            </rule>
             <!-- bellow code point subdomain.com to acb/maindomain/anotherdomain.com site  -->
            <rule name="subdomain.com to sub folder" enabled="true">
                <match url="(.*)" ignoreCase="true"/>
                <conditions logicalGrouping="MatchAll">
                    <add input="{HTTP_HOST}" pattern="^(www\.)?subdomain\.com$" ignoreCase="false"/>
                </conditions>
                <action type="Rewrite" url="subdomain.com/{R:1}" />
            </rule>
       </rules>
    </rewrite>
  </system.webServer>
</configuration>

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <system.webServer>
    <rewrite>
      <rules>
            <rule name="wordpress" patternSyntax="Wildcard">
                <match url="*"/>
                    <conditions>
                        <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true"/>
                        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
                    </conditions>
                <action type="Rewrite" url="index.php"/>
            </rule></rules>
    </rewrite>
  </system.webServer>
</configuration>

下面是subdomain.com/web.config文件代码

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
    <rewrite>
      <rules>
        <!-- for maindomain -->
        <rule name="maindomain" patternSyntax="Wildcard">
                <match url="*"/>
                    <conditions>
                        <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true"/>
                        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
                    </conditions>
<action type="Rewrite" url="index.php"/>
            </rule>
             <!-- bellow code point subdomain.com to acb/maindomain/anotherdomain.com site  -->
            <rule name="subdomain.com to sub folder" enabled="true">
                <match url="(.*)" ignoreCase="true"/>
                <conditions logicalGrouping="MatchAll">
                    <add input="{HTTP_HOST}" pattern="^(www\.)?subdomain\.com$" ignoreCase="false"/>
                </conditions>
                <action type="Rewrite" url="subdomain.com/{R:1}" />
            </rule>
       </rules>
    </rewrite>
  </system.webServer>
</configuration>

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <system.webServer>
    <rewrite>
      <rules>
            <rule name="wordpress" patternSyntax="Wildcard">
                <match url="*"/>
                    <conditions>
                        <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true"/>
                        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
                    </conditions>
                <action type="Rewrite" url="index.php"/>
            </rule></rules>
    </rewrite>
  </system.webServer>
</configuration>

仅当我想访问subomain.com/sub-post-title时才出现问题 不工作，它显示MainDomain404页面，但url是相同的
但与主域完美配合：maindomain.com/subomain.com/main-post-title

请帮帮我
我在谷歌上搜索过去两天的内容
提前感谢。