求助 - outlook express

[jal0707]

Message meets Alert condition
The following intrusion was observed: "frontpage: Path.Disclosure.SHTML [Reference:
http://www.fortinet.com/ids/ID103219238]".
2008-08-18 23:20:50 device_id=FGT-602104400596 log_id=0420070000 type=ips subtype=signature
pri=alert attack_id=103219238 src=192.168.1.63 dst=211.76.128.151 src_port=3278 dst_port=80
src_int=internal dst_int=wan1 status=detected proto=6 service=http msg="frontpage:
Path.Disclosure.SHTML [Reference: http://www.fortinet.com/ids/ID103219238]"

Message meets Alert condition
The following intrusion was observed: "iis: FrontPage._vti_inf.html.Access [Reference:
http://www.fortinet.com/ids/ID103284772]".
2008-08-18 23:20:50 device_id=FGT-602104400596 log_id=0420070000 type=ips subtype=signature
pri=alert attack_id=103284772 src=192.168.1.63 dst=211.76.128.151 src_port=3276 dst_port=80
src_int=internal dst_int=wan1 status=detected proto=6 service=http msg="iis: FrontPage._vti_inf.html.Access
[Reference: http://www.fortinet.com/ids/ID103284772]"


這是什麼意思；為什麼我的mail server 不能寄大容量的信；我是用linux 架的；

飛鳥可以教一下我嗎?謝謝