防猜密碼機制好像失效??

[Frank Hsu]

素大:
我使用 2 套 RMAILD + InterScan Virus Wall 的架構,
並且 enable [啟用防猜密碼機制] (2 套 RMAILD 都 enable).
根據下列的 log file 資料, 我懷疑防猜密碼機制好像失效??
2004/07/27:09:46:45 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526
2004/07/27:09:46:47 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526
2004/07/27:09:46:52 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS payue
2004/07/27:09:47:04 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526
2004/07/27:09:47:06 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526
2004/07/27:09:47:10 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526
2004/07/27:09:57:10 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526
2004/07/27:10:07:11 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526
2004/07/27:10:17:12 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526
2004/07/27:10:27:12 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526
2004/07/27:10:37:13 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526
2004/07/27:10:47:14 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526
2004/07/27:10:48:01 POP3 218.80.65.101 [Invalid Password for nancyhung] - PASS nancy2526

例外, 下列的猜測user信箱現象, 如何防範, 請指導.
(越來越多ㄝ, 而且 IP 都不固定)
POP3 80.218.38.149 [Sorry, no such a mailbox is found or mailbox is inactivated] - USER root
2004/07/27:02:16:37 POP3 80.218.38.149 [Sorry, no such a mailbox is found or mailbox is inactivated] - USER webmaster
2004/07/27:02:16:37 POP3 80.218.38.149 [Sorry, no such a mailbox is found or mailbox is inactivated] - USER user
2004/07/27:02:16:37 POP3 80.218.38.149 [Sorry, no such a mailbox is found or mailbox is inactivated] - USER test
2004/07/27:02:16:37 POP3 80.218.38.149 [Sorry, no such a mailbox is found or mailbox is inactivated] - USER web
2004/07/27:02:16:37 POP3 80.218.38.149 [Sorry, no such a mailbox is found or mailbox is inactivated] - USER www
2004/07/27:02:16:37 POP3 80.218.38.149 [Sorry, no such a mailbox is found or mailbox is inactivated] - USER oracle
2004/07/27:02:16:37 POP3 80.218.38.149 [Sorry, no such a mailbox is found or mailbox is inactivated] - USER sybase
2004/07/27:02:16:37 POP3 80.218.38.149 [Sorry, no such a mailbox is found or mailbox is inactivated] - USER informix

[Arnor]

[chun]

防猜機制不適用於WebMail Login嗎?
用Outlook測試五次後第六次會Deny掉,用WebMail可以不斷的試....
_________________
***************************************
Server:
CPU:XEON2.8G*2
RAM:2GB ECC/REG
OS:Windows 2000 server SP4
mail sever:RaidenMAILD 1915 update10 商業版
Firewall: ISA server
Domain:
IP:
***************************************

[Arnor]

[chun]

還有使用防猜機制後所Deny的IP有沒有設定多少時間後可以再連得上?
_________________
***************************************
Server:
CPU:XEON2.8G*2
RAM:2GB ECC/REG
OS:Windows 2000 server SP4
mail sever:RaidenMAILD 1915 update10 商業版
Firewall: ISA server
Domain:
IP:
***************************************

[ufay]

[Arnor]