RE: RES: RE: Directory Harvest Attack

  • From: "Steve Moffat" <steve@xxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Mon, 6 Dec 2004 15:02:54 -0400

ME 10 does Dir Harvest protection.
 
Steve

________________________________

From: Tiago de Aviz [mailto:Tiago@xxxxxxxxxxxxxxx] 
Sent: Monday, December 06, 2004 3:06 PM
To: [ExchangeList]
Subject: [exchangelist] RES: RE: Directory Harvest Attack


http://www.MSExchange.org/


Oh, i forgot to mention: I own GFI 9!

 

My concern is not the spam entering here, but if the guy can know which 
addresses are valid here, i´m afraid the volume of spam may increase greatly.

 

But I guess you can´t stop a flood with a glass of water...

 

Tiago

 

________________________________

De: Steve Moffat [mailto:steve@xxxxxxxxxx] 
Enviada em: segunda-feira, 6 de dezembro de 2004 16:57
Para: [ExchangeList]
Assunto: [exchangelist] RE: Directory Harvest Attack

 

http://www.MSExchange.org/

GFI

 

Steve

 

________________________________

From: Tiago de Aviz [mailto:Tiago@xxxxxxxxxxxxxxx] 
Sent: Monday, December 06, 2004 9:56 AM
To: [ExchangeList]
Subject: [exchangelist] Directory Harvest Attack

http://www.MSExchange.org/

Hello All,

 

I've been suffering a DHA for the last two weeks. Nothing major, just a couple 
of e-mails per minute, but it is clogging my spam box with all kinds of invalid 
addresses.

 

I've disabled NDR´s so the dude who's sending these things won't be able to 
know which e-mails are valid or not.

 

I´ve tracked these messages and they appear to be coming from all over the 
place. How can I fight it? Disabling NDR´s is not a cool solution because 
people can´t know if a message was delivered here.

 

Thanks in advance,

 

Tiago

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