مکشل Delivery Status Notification (Failure) در جی میل

سلام
من از برنامه mozila thunderbirdبرای امور ایمیلم استفاده می کنم
هر وقت با این برنامه پیامی ارسال می کنم جی میل پیام زیر را برام ارسال میکنه که محتواش یعنی من دارم اسپم میدم
چجوری حالیش کنم که این طوری نیست؟

Delivery to the following recipient failed permanently:

mil?==?UTF-8?Q?****@yahoo.com

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554 delivery error: dd This user doesn't have a yahoo.com account (mil?==?utf-8?q?****@yahoo.com) [0] - mta197.mail.sp2.yahoo.com (state 18).

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

Received: by 10.227.133.147 with SMTP id f19mr3381510wbt.27.1311569285020;
Sun, 24 Jul 2011 21:48:05 -0700 (PDT)
Return-Path: <aminmazrouei@gmail.com>
Received: from [10.0.150.161] ([78.109.196.71])
by mx.google.com with ESMTPS id fn12sm3990419wbb.55.2011.07.24.21.47.58
(version=SSLv3 cipher=OTHER);
Sun, 24 Jul 2011 21:48:00 -0700 (PDT)
Message-ID: <4E2CF57B.****@gmail.com>
Date: Mon, 25 Jul 2011 09:17:55 +0430
From: amin_mazrouei <aminmazrouei@gmail.com>
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20110624 Thunderbird/5.0
MIME-Version: 1.0
To: =?UTF-8?B?ItmB2LHZiNi0IHZwbixsMnRwLHBwdHAsc3N0cCxpcGlnLG 9wZW52cG4i?=
<"mil?= =?UTF-8?Q?****"@yahoo.com>
Subject: Re: =?UTF-8?B?2K/YsduM2KfZgdiqINi02YXYp9ix2Ycg2K3Ys9in2KggRm9ybSA=? =
=?UTF-8?B?c3VibWl0dGVkIG9uINmB2LHZiNi0IHZwbixsMnRwLHBwdH Asc3N0cCxpcGlnLG8=?=
=?UTF-8?B?cGVudnBu?=
References: <81af45b304fd2254ea1bbdea816c58da@***>
In-Reply-To: <81af45b304fd2254ea1bbdea816c58da@****>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit