我的solaris机器不停的和一台机器连接smtp端口，请高手指教

moon_zhang

我怀疑系统是不是有了黑客后门或者 漏洞，请高手指教！！\r\n\r\n202.108.255.203 ->; 61.187.117.10 SMTP R port=55656 503 Error: need RCPT\r\n61.187.117.10 ->; 202.108.255.203 SMTP C port=55656 From:<luqgz@163.net>;\r\n61.187.117.10 ->; 202.105.241.16 TCP D=16715 S=55659 Syn Seq=1158800380 Len=0 Win=24820 Options=<nop,nop,sackOK,mss 1460>;\r\n61.187.117.10 ->; 202.104.55.55 TELNET R port=14332 61.187.117.10 ->; 202\r\n202.108.255.203 ->; 61.187.117.10 SMTP R port=55656 \r\n61.187.117.10 ->; 202.108.255.203 SMTP C port=55656 To:<lu@gsta.com>;\\nSub\r\n202.104.55.55 ->; 61.187.117.10 TELNET C port=14332