[问题求助]i cant telnet ip 25? [复制链接]

telnet localhost 25 .is ok           鲜花
telnet ip 25 conn.ecti.on refused教育
firewall i.s closed(iptables -F.)            杀毒
netstat -an ,can se.e port 25 of 127.0..0.1 is listening虚拟主机
who can tell me why.?.