xxx

@@ -129,6 +129,7 @@ class Body {
 
     public function ltrimText($body){
         $bodyMiaoSuText = [
+            "This is a multi-part message in MIME format",
             "This is a multi-part message in MIME format.",
             "This is a multipart message in MIME format.",
             "This is a MIME message. If you are reading this text, you may want to \r\nconsider changing to a mail reader or gateway that understands how to \r\nproperly handle MIME multipart messages.",
@@ -137,7 +138,7 @@ class Body {
 
         foreach ($bodyMiaoSuText as $str){
             // 这个是描述特殊文本
-            if(strpos($body,$str)===0){
+            if(stripos($body,$str)===0){
                 $body = ltrim($body,$str);
                 $body = trim($body);
             }