سلام دوستان

من مشکل در ارسال ایمیل به یه اکانت دارم .

ایمیلی از yaghoobi@tehran-co.com به zahra@tjn-eng.comzahra@tjn-eng.com می فرستم اما برگشت می خوره و پیغامی میده :
From: MAILER-DAEMON@linux.palizct.com
[mailto:MAILER-DAEMON@linux.palizct.com]
Sent: Wednesday, August 14, 2013 9:50 AM
To: yaghoobi@tehran-co.com
Subject: failure notice

Hi. This is the qmail-send program at linux.palizct.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<zahra@tjn-eng.com>:
174.123.173.203 failed after I sent the message.
Remote host said: 554 Sorry, message looks like SPAM to me

--- Below this line is a copy of the message.

Return-Path: <yaghoobi@tehran-co.com>
Received: (qmail 29983 invoked from network); 14 Aug 2013 0929 +0430
Received: from unknown (HELO YaghoobiPC) (5.201.141.143)

علت چیه که برگشت میخوره و چه کار باید کنم ؟