Jason Haar dijo:
Michel Arboi wrote:
We run tinydns and ensure our DNS records are always small enough to fit
within a single UDP packet
I understand the trick, but can you be sure of the behaviour of the
remote client software?
You're saying there are DNS clients out there that *default* to TCP for
DNS lookups???
I know of at least one: Exhange 2000 in Windows 2000 will use TCP DNS
queries by default for the SMTP service (to find MX records).
http://support.microsoft.com/?id=263237
Notice that this applies if the Windows 2000 server is querying your DNS
server, i.e., if it's internal. If it's an external server it will
probably query it's own DNS server (which will surely use UDP DNS
queries to retrieve the MX record and answer back)
We've been running this "trick" for many years now. Never heard of
anyone not being able to connect to our MX records, DNS servers, Web
servers, etc, etc (of course, we never would hear from anyone having a
problem ;-)
Well, you are lucky, you probably don't have to support Windows 2000
internally then :)
Regards
Javier
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