In this case, spamdyke would perform 1 additional DNS query (to find the reverse DNS name).
-- Sam Clippinger > 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. > _______________________________________________ > spamdyke-users mailing list > [email protected] > http://www.spamdyke.org/mailman/listinfo/spamdyke-users > _______________________________________________ spamdyke-users mailing list [email protected] http://www.spamdyke.org/mailman/listinfo/spamdyke-users
