On Thu, May 08, 2008 at 07:34:43PM -0500, [EMAIL PROTECTED] wrote:
> As clever as the automatic RBL system is, I would recommend against it
> until you can figure out why this is happening. If this is due to
> backscatter, you could end up blacklisting (otherwise) legitimate mail
> servers. Also, with the kind of load you're getting, I don't think adding
> rblsmtpd would be an improvement -- adding DNS lookups would just increase
> the time needed to accept an incoming connection.
In this case, rblsmtpd would only do one lookup, on a local DNS server.
It's not self-evident, at least to me, which of these two is faster:
1. start rblsmtpd and have it perform a local DNS lookup. If NXDOMAIN, start
spamdyke as normal.
2. start spamdyke, which does a number of remote DNS lookups regardless of
whether the sender or the recipient are blacklisted (doesn't it?).
Of course, adding the IPs to spamdyke's ip blacklist is also an option, but
with 70k addresses, I'm guessing lookups will take spamdyke longer than
rbldns, which uses a cdb.
Andras
--
Andras Korn <korn at chardonnay.math.bme.hu>
<http://chardonnay.math.bme.hu/~korn/> QOTD:
Floggings will continue until morale improves.
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