[GTER] Spam

[Michel Angelo da Silva Pereira]

	Estou utilizando a versão para Linux (Razor), mas ele gera muitos falso 
positivos.
	Como por exemplo, diariamente eu tenho que verificar a minha caixa de 
SPAM, porquê sempre cai um bugtraq at securityfocus.com lá dentro, e também 
de várias outras listas.
	Vários colegas aqui do trabalho caíram na minha caixa SPAM. =(
t+

Weber Ress wrote:
> 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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> 
> 
> --
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-- 
=================================
SCSA - Certificado Conectiva
Security Officer - Net Site S/A.
Michel Angelo da Silva Pereira
michelpereira at netsite.com.br
=================================