Using rbl lists

[Chris Picciotto]

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I don't agree 100% with this approach. Using BL at the MTA has some very
significant benefits. The most significant is that rejecting at the MTA
prevents any further downstream processing by either MS or SA (and virus
scanner) which are all resource intensive. On server where there is a lot of
incoming spam, this will make a huge difference.

I do agree that not all lists are appropriate for rejection at the MTA, but
certainly ORDB is. I also use Spamcop at the gateway, and find few (to no)
FP's. Others, such as SORBS, are effective but have a tendency to
occasionally list major smtp servers such as AOL etc., so more care needs to
be taken.

Chris

----- Original Message -----
From: "Michele Neylon :: Blacknight Solutions"
<michele at BLACKNIGHTSOLUTIONS.COM>
To: <MAILSCANNER at JISCMAIL.AC.UK>
Sent: Sunday, December 12, 2004 3:53 AM
Subject: Re: Using rbl lists


> MailScanner mailing list wrote:
>> Quick question about spam blacklists (RBLs).
>>
>> I've added a few lists to the "Spam List" setting but what
>> determines whether a message gets classified as spam?  If the
>> sending server, for example, is on one RBL then is this sufficient?
>
> As already mentioned one RBL is enough to block the mail. The problem with
> the RBLs being used in this way is that it is a very blunt tool and your
> FP
> rate can be very high. Using the RBLs via SA gives a better result.
>
>
>
> Mr Michele Neylon
> Blacknight Internet Solutions Ltd
> Hosting, co-location & domains
> http://www.blacknight.ie/
> Tel. +353 59 9137101
> http://www.blacknight.ie/specialoffers.html

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