gmail SMTP寄外部信箱，信件大delay - Google

想請教一個問題
最近發現，用SMTP發出信件，並且發到非gmail信箱時
會出現嚴重的Delay
但是用web介面發信，就非常的正常

不知道各位有沒有解決方法呢？
client端用的是雷鳥
PS.我的TLS key設定正常

以下是delay的訊息
This is an automatically generated Delivery Status Notification

THIS IS A WARNING MESSAGE ONLY.

YOU DO NOT NEED TO RESEND YOUR MESSAGE.

Delivery to the following recipient has been delayed:

[email protected]

Message will be retried for 1 more day(s)

----- Original message -----

DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=gmail.com; s=20120113;
h=message-id:date:from:user-agent:mime-version:to:subject
:content-type;
bh=7s5C3HypuLrlKymfXnXJwAq6PJyESGo7KvfjyxsyO+A=;
b=Uqb98EYz77y+2+ZB1S0Ye4xbuHlfHrb4hN6ETFqAycngy+0+E0dLT1a1iesijH+ZKc
OdE4rw1s4JqYojTXKA0tHtSm+sQRQ4iXBX//1NTIVaEJd1sd3+LNzGpHaij3oUdpqe5X
46/HwQwzfpKIBE+vQlZmR+l9Jo5EDOuUyKXKxQHHkRqLLqik8zMdBZHDymxub3muFdHo
CIn0jrKg5acbW/nXio5XFmZp4JJGu7bI0SoMi7bSril9f8Qvn756A8eX/U81g98jCPVu
p1xHj9Eiw7VDkxxEIgEDoLjvAyjnsTnZv8+Tftp2BAJXQQ2Qe/Z6hWX8HheqDb3zfF48
yzoQ==
Received: by 10.68.223.164 with SMTP id qv4mr22466887pbc.20.1342885118170;
Sat, 21 Jul 2012 08:38:38 -0700 (PDT)
Return-Path: <[email protected]>
Received: from [112.104.144.52] ([112.104.144.52])
by mx.google.com with ESMTPS id ny4sm6214120pbb.57.2012.07.21.08.38.35
(version=SSLv3 cipher=OTHER);
Sat, 21 Jul 2012 08:38:37 -0700 (PDT)
Message-ID: <[email protected]>
Date: Sat, 21 Jul 2012 23:38:32 +0800
From: "=?UTF-8?B?55m96bm/5rSe5YWn5rmW5bqX?=" <[email protected]>
User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:14.0) Gecko/20120713
Thunderbird/14.0
MIME-Version: 1.0
To: =?UTF-8?B?6YKm5paw?= <[email protected]>
Subject: =?UTF-8?B?5YWn5rmW5bqX5q+P5pel5aCxKOaWsCnooagxMDEuMDcuMjE=?=
Content-Type: multipart/mixed;
boundary="------------070105080304090505050300"


順便請教一下，如果要寫信給gmail人員，要寫給哪一個mail address？
以上，謝謝

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