I'll add my 2 cents worth on how useful it is. After I enabled the
blocking, my spam definitely dropped off. However, I've dropped at least
one legitimate non-spam e-mail that happened to come from a open relay at a
local county.
You can write some scripts to go through your own maillog and determine
whether or not you would have blocked any e-mail and who the messages came
from. It is extremely likely that you will reduce your spam. It is also
likely that you will block legitimate e-mail.
I have yet to see a perfect spam filter - in all cases, they have either
blocked or categorized legitimate e-mail as spam. You'll have to decide if
the risks outweigh the benefits.
.../Ed
Ed Wilts
Mounds View, MN, USA
mailto:[EMAIL PROTECTED]
----- Original Message -----
From: "Jeff Graves" <[EMAIL PROTECTED]>
> Does anyone on the list use dnsbl with sendmail? Is this a good idea to
> block spam? How do you go about doing it? (ie. should i pull mutliple
> zones from my nameserver and query my name server for spammers or should
> i just enter a seperate FEATURE line for each server in my sendmail.mc
> file) Any info is appreciated!
>
>
> Jeff Graves
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