Index: /branches/dev/data/class/GC_SendMail.php
===================================================================
--- /branches/dev/data/class/GC_SendMail.php	(revision 17)
+++ /branches/dev/data/class/GC_SendMail.php	(revision 29)
@@ -56,5 +56,6 @@
 		$this->header		.= "Bcc: " . $bcc . "\n";
 		$this->header		.= "Errors-To: ". $errors_to ."\n";
-		$this->return_path   = $return_path;
+		// return_path¤Ï¡¢¥á¡¼¥ë¥Ø¥Ã¥À¡¼¾å¤Ë·Ù¹ð¤¬É½¼¨¤µ¤ì¤ë¤Î¤ÇÍøÍѤ·¤Ê¤¤¡£
+		$return_path = "";
 	}
 
@@ -73,5 +74,6 @@
 		$this->header		.= "Bcc: " . $bcc . "\n";
 		$this->header		.= "Errors-To: ". $errors_to ."\n";
-		$this->return_path   = $return_path;
+		// return_path¤Ï¡¢¥á¡¼¥ë¥Ø¥Ã¥À¡¼¾å¤Ë·Ù¹ð¤¬É½¼¨¤µ¤ì¤ë¤Î¤ÇÍøÍѤ·¤Ê¤¤¡£
+		$return_path = "";
 	}
 
@@ -80,7 +82,7 @@
 
 		Mb_language( "Japanese" );
-		
+				
 		//¡¡¥á¡¼¥ëÁ÷¿®
-		if( mb_send_mail( $this->to, $this->subject, $this->body, $this->header, "" . $this->return_path ) ) {
+		if( mb_send_mail( $this->to, $this->subject, $this->body, $this->header) ) {
 			return true;
 		}
@@ -93,5 +95,5 @@
 		
 		//¡¡¥á¡¼¥ëÁ÷¿®
-		if( mail( $this->to, $this->subject, $this->body, $this->header, "" . $this->return_path ) ) {
+		if( mail( $this->to, $this->subject, $this->body, $this->header) ) {
 			return true;
 		}