>From: "Rodney W. Grimes" <[EMAIL PROTECTED]>
>Date: Fri, 24 Sep 1999 03:00:55 -0700 (PDT)
>Another thing that ISP coulds start doing (we are in process with
>this now, but on a monitoring only basis, instead of a deny we
>just log them) is to block all outbound from AS tcp 25 setup packets.
Not quite sure I follow this.
>This prevents your customers from being something that could get you
>on the RBL or the DUL MAP for bad behavior, it also inforces the use
>of your smart host relay, as it/they is/are the only way to get a
>tcp port 25 setup completed.
About the only positive thing I have to say about the DUL is that Vix
stated that entries are placed on it at the request of the custodians of
the netblock in question.
>Do you know about the RBL? How do you feel about it? We are using
>it via DNS and BGP on a test basis right now. I have had legitimate
>important mail blocked at Freebsd.org due to the source being on the
>RBL, but that is a price I am willing to pay.
I'm far more comfortable with the use of the RBL than the DUL.
Indeed, my externally-visible home SMTP server uses the RBL (but not the
DUL).
Cheers,
david
--
David Wolfskill [EMAIL PROTECTED] UNIX System Administrator
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