On Thu, Jul 05, 2001 at 05:25:04PM +0200, Marek Gutkowski wrote:
> Mail server really tries to connect to the DNS with tcp dport 53. It does.
> It does. I'm sure.

Whenever a dns response exceeds the magic XXX byte size (forgot the exact
number) the udp query is dropped and retried over tcp, that's what you are
seeing. Easy to guess that this slows down things and is totally bogus as
there is no real reason for a dns response to be bigger than these X bytes.
the big-dns patch enables qmail to use these oversized dns packtes, but
hotmail's setup is stupid.

-- 
* Henning Brauer, [EMAIL PROTECTED], http://www.bsws.de *
* Roedingsmarkt 14, 20459 Hamburg, Germany               *
Unix is very simple, but it takes a genius to understand the simplicity.
(Dennis Ritchie)

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