[GTER] Spam

[Weber Ress]

Srs,

Este software utiliza um conceito interessante.

http://www.cloudmark.com/products/authority/

Cloudmark Authority stops spam at the gateway preventing unwanted email from
impacting your employee productivity and computing infrastructure.

Authority integrates third generation anti-spam technology, spamGenes and
the output of Cloudmark's SpamNet collaborative network of spamfighters. The
resulting combination delivers a solution with unparalleled accuracy,
performance and the lowest cost of ownership - one that is optimized for
deployment in demanding enterprise IT environments. 

How It Works
Authority operates at the enterprise's mail gateway, filtering spam before
it reaches the user's mailboxes where it wastes a business' most precious
resource - its employee's time. The solution typically is installed on the
Gateway Message Transfer Agent (MTA), the "gatekeeper" to a company's
messaging infrastructure. Authority evaluates each message, assigning it a
confidence level and accessing company messaging policies to determine
appropriate routing action. 

Authority is engineered for security - It does not require a connection to
Cloudmark for updates and sensitive corporate email always remains onsite. 

The Lowest Total Cost of Ownership
Authority plugs into existing email hardware and software so it doesn't
interfere with current infrastructure. It requires no additional hardware,
configuration, or professional services. Authority runs in memory and its
lean runtime only impacts the MTA by 5-10%, making it far and away the
leader in performance compared to the usual impact of 40% that others
consume along with additional hardware and support. 


O cliente pode ser testado free. Testem !! É muito interessante....

http://www.cloudmark.com/products/spamnet/

[]'s

Weber

-----Original Message-----
From: gter-admin at eng.registro.br [mailto:gter-admin at eng.registro.br] On
Behalf Of Rafael R Obelheiro
Sent: Monday, January 20, 2003 5:02 PM
To: Durval Menezes
Cc: gter at eng.registro.br
Subject: Re: [GTER] Spam


Oi Durval,

On Mon, Jan 20, 2003 at 04:50:50PM -0200, Durval Menezes wrote:
> 
> On Mon, Jan 20, 2003 at 04:29:39PM -0200, Jose Roberto B. Gimenez 
> wrote:
> 
> > A solução é DENY-ALL. Estou plenamente convencido disso. Se alguém 
> > não pensa como eu, é porque ainda não está recebendo milhares de 
> > SPAMs por semana. Para quem ainda desfruta desta condição, sugiro 
> > fornecer um endereço falso toda vez que lhe seja requisitado o 
> > endereço de e-mail, especialmente na entrada dos eventos de 
> > informática.
> 
> DENY-ALL certamente vai resolver o problema de spam. O problema e' que 
> a cura acaba matando o paciente (email legitimo) junto...
> 
> Uma solucao (que infelizmente acredito que tambem seja temporaria) e' 
> usar autenticacao (ou seja, o primeiro email de alguem desconhecido 
> resulta numa "mensagem de confirmacao" para o dito cujo, que precisa 
> ser respondida para que o email chegue ate' voce. Quanto tempo ate' os 
> "spammers" fazerem os seus proprios "respondedores automaticos de 
> challenges", pelo menos para os "challengers" mais comuns? Afinal, 
> eles estao convencidos (e totalmente apoiados pela pratica corrente) 
> que tem o sagrado direito de continuar entupindo nossas caixas postais 
> com baboseiras...

Ja' existe um MTA que apresenta as caracteristicas citadas, o TMDA: 

[http://www.tmda.net]

  Tagged Message Delivery Agent (TMDA)

  TMDA is an OSI certified software application designed to
  significantly reduce the amount of SPAM/UCE (junk-mail) you receive.
  As a SPAM filter, TMDA combines a "whitelist" (for known/trusted
  senders), a "blacklist" (for undesired senders), and a
  cryptographically enhanced confirmation system (for unknown, but
  legitimate senders). TMDA strives to be more effective, yet less
  time-consuming than traditional filters.

  [...]


Um abraco,
Rafael.


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