On Tue, 12 Oct 1999, Ian Jackson wrote:
> A friend of mine works for an ISP. One of their big mail servers was
> configured to (a) run nscd
What were the details of their configuration?
> and (b) do reverse lookup on all incoming
> SMTP connections.
That is costly but sometimes worthwhile.
> But, nscd is crap[tm] and serialises all its DNS
> queries, giving rather unhelpful behaviour: you didn't get 220 until
> everyone in the queue in front of you had had their crap nameservers
> timed out on. nscd could in principle not serialise requests, and use
> the DNS TTL values, but that's probably too much hard work for Sun.
You're living in the past - catch up. If you truly understood nscd, you'd
know that the serialisation was not a function of nscd itself, but of the
resolver libraries in earlier Solaris releases. Thanks for the
interesting FUD story though.
> (Plug: fed up with libresolv ? Try my resolver library, currently in
> alpha. http://www.chiark.greenend.org.uk/~ian/adns/ )
Since we're all in the mood for labeling software which we haven't
bothered to learn to understand, I suggest that your library is crap[tm]
and that nobody should use it (for reasons which I am unwilling or unable
to provide).
--
/*-------------------------------------------------------------*
* Peter James Naylor ## SysAdmin, Supernal Technologies, Inc. *
*-------------------------------------------------------------*
* pete@??? ## <http://www.supernal.net> *
*------------------------------------------------*/
