请高手紧急求助啊

rosa

发往三个地址的退信原因<br>
Unknown user: ******@sina.com <br>
<br>
RCPT TO generated following response: <br>
554 Please visit <a target=_blank href=http://antispam.sina.com.cn/denyip.php?IP=>http://antispam.sina.com.cn/denyip.php?IP=</a>**.***.**.***(#5.7.1) <br>
<br>
<br>
Unknown user: *****@sohu.com <br>
<br>
RCPT TO generated following response: <br>
550 <*****@sohu.com>: User unknown or disabled <br>
<br>
<br>
<br>
Unknown user: ******@hotmail.com <br>
<br>
RCPT TO generated following response: <br>
550 Requested action not taken: mailbox unavailable <br>
<br>
请高手帮忙指点指点啊，在线等QQ：112719665<br>

钉子

昨天我在帖子和你回复了，是反垃圾邮件策略造成的，或昌你看看置顶的帖。