At 13:00 2004-05-23 -0600, Linux wrote:
I have seen allot of packages that have RBL queries built in., Spamassassin
being one of them. Does anybody know of a package or method to use that is
designed for RBL queries only?
'host'. You should find it on most systems.
The thing is, if you want to query multiple DNSBLs _efficiently_, you
should probably think about writing (or having someone write) a util to
perform a series of queries, returning the composite results. Otherwise,
you're calling host a number of times for each message, instead of just once.
A smart query tool could also track how long each query is taking, and
possibly reorder the queries (if you bail on the FIRST hit, say), or also
raise a warning if one of the DNSBLs starts returning errors (such as when
they go off the air).
But, 'host' will perform a query for you. You _do_ need to reverse the
octets of the IP you want to look up. There's code to do this which has
been posted to this list in the past - try using the archive search.
Sean B. Straw / Professional Software Engineering
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