On 18-Jan-99 05:51:16, Chris Johnson wrote something about "Re: Three solutions for
spam". I just couldn't help replying to it, thus:
> I've always wondered why Dan doesn't have an MX record for koobera (though
> it doesn't really matter now that we're supposed to be using list.cr.yp.to).
> An A record is all that's required to get the mail delivered, but if there
> were an MX record my name server would cache it, rather than making a query
> in vain for a non-existent MX record every time a message needs to go there.
There is such a thing as caching of negative replies. Correct me if I'm
wrong, but IIRC, BIND does so.
Regards,
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