Hello Len Conrad, I don't know how to setup the Declude JunkMail to block an attackers' IP.
======= 2003-03-12 11:17:00 Original Message ======= >>When is IMAIL can support the following feature? > >>Tarpitting (recommended) > >They don't know what tarpitting is. > >tarpitting is when a defending MTA intentionally "goes slow" with it SMTP >responses to an attackers STMP commands, ie, the attacked MTA makes the >attacker come through a sticky tar patch, in order to hold the attacker on >line longer. > >The fatal problem is that it also ties up the resources of the defending >MTA. > >Worse than fatal, the attacker often has many more resources to waste on >the tarpitted attack than the attacked MTA has resouces to waste on >tarpitting the attacker. So the tarpitting MTA risks DoSing itself with >its own stupid defense. > >>This feature is very effective against Trial and Error Harvesting. > >Their feature is effective if it works, but it's not tarpitting. > >The most effective tarpitting action is to drop silently the TCP connection >with the attacker as quickly as possible. > >>Administrators can configure VisNetic MailServer to check for unsuccessful >>attempts to deliver messages to unknown users by external or local >>non-existing users. If the number of attempts in a session exceeds the >>number specified by the Admin, the IP address of the sender will be >>remembered for that period and no access from that IP address will be >>allowed within that period. We recommend a count of 3-5 and a period of 60 >>to 240 min. > >And, in supreme FUDness, that's not even tarpitting, it's simple blocking. > >I? working on a Imail add-on product that will do this kind of defense, >and more. It will be cheap and effective when used as directed. > >Len > > >To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html >List Archive: http://www.mail-archive.com/imail_forum40list.ipswitch.com/ >Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ ==================================================== Best Regards, riverpan [EMAIL PROTECTED] 2003-03-13 To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
