headers not allow to send the mail

["amit" <paragchaure@xxxxxxxxx>]

Hi all,

I have create a script of form processor which is working properly in some servers but now it does not allow to send the mail form the server.
If I removes the headers the mail is send 

here is the code 

$unique_id=md5(uniqid(rand()));
		$this->boundary='-----='.$unique_id;
		$from=($type==1)?((km_str_casecmp("[|re_Email|]",$this->arrkm['FROM']))?$_POST['re_Email']:$this->arrkm['FROM']):$this->arrkm['AUTOFROM'];
		$headers="Date: ".$this->RFCDate().CRLF;
		$headers.="Return-Path: ".$from.CRLF;
		$to=($type==1)?$this->arrkm['TO']:((km_str_casecmp("[|re_Email|]",$this->arrkm['FROM']))?$_POST['re_Email']:$this->arrkm['FROM']);
		$headers.="To: ".$to.CRLF;
		$headers.="From: ".$from.CRLF;
		$replyto=($type==1)?$from:$this->arrkm['AUTOFROM'];
		$headers.="Reply-to: ".$replyto.CRLF;
		if($type==1 && !empty($this->arrkm['CC'])){
			$headers.="Cc: ".$this->arrkm['CC'].CRLF;
		}
		if($type==1 && !empty($this->arrkm['BCC'])){
			$headers.="Bcc: ".$this->arrkm['BCC'].CRLF;
		}
		$subject=($type==1)?$this->arrkm['DATAEMAILSUBJECT']:$this->arrkm['AUTOSUBJECT'];
		$subject=str_replace("\r\n"," ",$subject);
		$subject=str_replace("\r"," ",$subject);
		$subject=str_replace("\n"," ",$subject);
		$subject=$this->replaceTags($subject);
		$headers.="Subject: ".$subject.CRLF;
		$headers.=sprintf("Message-ID: <%s@%s>%s",$unique_id,$this->getServerHostName(),CRLF);
		$headers.="X-Priority: 3".CRLF;
		$headers.="X-Mailer: Kmita Mail (kmitascripts.com) [Version 4]".CRLF;
		$headers.="Disposition-Notification-To: ".$from.CRLF;
		$headers.="MIME-Version: 1.0".CRLF;
		if(($type==1 && $this->dataemattachment) || ($type==2 && !empty($this->arrkm['AUTOATTACHMENT']) && is_file(stripslashes($this->arrkm['AUTOATTACHMENT'])))){
			$contenttype=2;
		}else{
			$contenttype=($type==1)?$this->arrkm['DATAEMAILFORMAT']:$this->arrkm['AUTOFORMAT'];
		}
		$headers.=$this->getMailMime($contenttype,CRLF);
		$this->from=$from;
		$this->to=$to;
		$this->subject=$subject;
		$this->headers=$headers;

is any problems in creating header for mail?

Please help me 
Thank you in advance