spamassasin and web based mail !

[Cigan Segun <ci...@yahoo.co.uk>]

Hello, good people,
I am very new to SpamAssasin. 
Please can you tell me if Spamassasin can be used to filter web based mails like yahoomail, hotmail, mail , etc.?
 
I want to be able to filter only the web based mails that is sent out of my network to the Internet, especially against spams and scams.
Please if you know, kindly help me out. I am under pressure here in my office to provide solution to the problems of spams thats is sent through the web based mails from my office to the Internet.
 
Thanks in anticipation.
Cigan_ng
 

		
---------------------------------
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Re: spamassasin and web based mail !

[Matt Kettler <mk...@evi-inc.com>]

At 02:55 PM 11/12/2004, Cigan Segun wrote:
>Hello, good people,
>I am very new to SpamAssasin.
>Please can you tell me if Spamassasin can be used to filter web based 
>mails like yahoomail, hotmail, mail , etc.?
>
>I want to be able to filter only the web based mails that is sent out of 
>my network to the Internet, especially against spams and scams.
>Please if you know, kindly help me out. I am under pressure here in my 
>office to provide solution to the problems of spams thats is sent through 
>the web based mails from my office to the Internet.

If by this you mean filter mail messages sent and received by users logged 
into the web interfaces of yahoo, etc. then the answer is a resounding no. 
SA cannot, and I highly doubt anything can.

SpamAssassin can scan EMAIL. Webpages that are used as interfaces to 
control the creation and reading of email are distinctly not email 
messages, they are webpages, nothing more. Since Yahoo, hotmail, etc change 
their web interface constantly, it would be extraordinarily difficult to 
write any form of tool that could decode them, and even harder to patch 
that into some sort of transparent http proxy so you could "block" the 
offensive webpages.


If however, you want to set up your mailserver to only use SA to scan mail 
sent to yahoo or from a yahoo address, etc,  that's possible. You can 
pretty easily set up rules in most MTA layer integrations that control what 
email gets fed to SA. One such tool is MailScanner. You could easily 
configure MailScanner to use SpamAssassin on mail From or To yahoo, 
hotmail, etc, and not feed SA any other emails. Most MailScanner options 
can be controlled by rules, so you'd make the "Use SpamAssassin" option a 
rule-list where some addresses get scanning, and others bypass it.
   

Re: spamassasin and web based mail !

[Yang Xiao <yx...@gmail.com>]

>I am under pressure here in my office to provide solution to the
problems of spams thats is >sent through the web based mails from my
office to the Internet.

Wow.... turn off access to web based email on your proxy server,
firewall or whatever, you don't need spam checking, you need http
access control :P


Yang