求助啊，超CPU，看日志有个主要错误，是不是被挂马了？

9116688

我的不是垃圾站啊，最近老是出现错误界面，说是超CPU，我看错误日志里有这个

MAIN error_log:
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[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 220-box349.bluehost.com ESMTP Exim 4.68 #1 Tue, 15 Jan 2008 19:06:37 -0700 , referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 220-We do not authorize the use of this system to transport unsolicited, , referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 220 and/or bulk e-mail., referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250-box349.bluehost.com Hello localhost [127.0.0.1], referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250-SIZE 52428800, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250-PIPELINING, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250-AUTH PLAIN LOGIN, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250-STARTTLS, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250 HELP, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250-box349.bluehost.com Hello localhost [127.0.0.1], referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250-SIZE 52428800, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250-PIPELINING, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021
[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250-AUTH PLAIN LOGIN, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021
[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250-STARTTLS, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021
[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250 HELP, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021
[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 250 OK, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021
[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 550-Verification failed for <greg.ulland@borderlinevbc.org>, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021
[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 550-No Such User Here, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021
[Tue Jan 15 19:06:37 2008] [error] [client 72.49.54.159] 550 Sender verify failed, referer: http://www.borderlinevbc.org/signup.php?action=signup&id=2008000021

http://www.borderlinevbc.org，这不是我的网站，那位老大知道怎么解决吗