소스에 문제가 있는것 같습니다.

기존에 c2dm 송수신이 되던게 안되는거면 서버겠지만 그게 아닌경우 소스 문제지요.

php로 c2dm 보내는 샘플 첨부합니다.

 <?
$ch = curl_init();   
   
curl_setopt($ch, CURLOPT_URL, "https://www.google.com/accounts/ClientLogin");   
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);   
   
$data = array('accountType' => 'HOSTED_OR_GOOGLE',   
'Email' => '메일주소',   
'Passwd' => '패스워드',   
'source'=>'test-1.0',   
'service'=>'ac2dm');   
    
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);   
curl_setopt($ch, CURLOPT_POST, true);   
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);   
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);   
 
$result = curl_exec($ch); 
$auth = substr(strstr($result, "Auth="), 5);  
$auth = substr($auth, 0, strlen($auth)-1); 
 
curl_setopt($ch, CURLOPT_URL, "https://android.apis.google.com/c2dm/send"); 
 
$data = "레지 ID"."&collapse_key=1"."&data.msg=TEST할 전송내용"; 
curl_setopt($ch, CURLOPT_POSTFIELDS, $data); 

$headers = array( 
    "Content-Type: application/x-www-form-urlencoded", 
    "Content-Length: ".strlen($data), 
    "Authorization: GoogleLogin auth=$auth" 
); 
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);  
 
$result = curl_exec($ch); 
echo $result."\n"; 
 
curl_close($ch); 
?>