Re: DNS problems to RoadRunner - tcp vs udp

[Seth Mattinen <sethm () rollernet us>]

Jon Kibler wrote:
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> Mark Price wrote:
> <SNIP>
> > >From what I have read, public DNS servers should support both UDP and
> > TCP queries.  TCP queries are often used when a UDP query fails, or if
> > the answer is over a certain length.
>
> UDP is used for queries.
>
> TCP is used for zone transfers.
>
> If my server responded to TCP queries from anyone other than a secondary
> server, I would be VERY concerned.

I see long TXT records from some DNSBLs that won't fit in a UDP packet 
on a daily basis. Certainly nothing to be concerned about.

~Seth