Increased Volumes Of Spam

[Matt Kettler]

Randal, Phil wrote:
> Scott Silva wrote:
>> cbl.abuseat.org is part of zen.spamhaus.org, via the included
>> lookup against the xbl list, so using both just increases your
>> dns lookups without any extra benefit.
>> Greetpause does help a lot, as I probably drop 10 to 20% of
>> the spam with it alone. Five seconds is a good starting point,
>> but probably not over 30 seconds.
> 
> The only problem with zen.spamhaus.org is this statement, found on
> http://www.spamhaus.org/zen/index.lasso :
> 
> "ZEN Usage
> 
> Use of the Spamhaus DNSBLs via DNS queries to our public DNSBL mirrors
> is free for low-traffic mail servers serving less than 100 users. Use of
> the Spamhaus DNSBLs by commercial users, including corporate networks,
> ISPs and ESPs, requires a subscription to Spamhaus's Data Feed service."
> 


Interesting.. a similar, but less specific, statement cropped up on the SBL
pages too:

http://www.spamhaus.org/sbl/howtouse.html

 Use of the SBL is free for individuals operating small mail servers as long as
your email traffic is low. Commercial users, corporate networks and ISPs need to
purchase a yearly subscription to use the service: see DataFeed.

Whereas XBL says it's free but high traffic sites should use a datafeed:

http://www.spamhaus.org/xbl/index.lasso

Use of the XBL is free for users with normal mail servers (but networks with
high email traffic should see DataFeed).