On Oct 6, 2004, at 12:32 PM, Stuart D. Gathman wrote:
The point is that later on when the new RR is widely deployed, then
this will
change to:
MUST have RR
MAY have TXT
I would play a little harder and say "SHOULD NOT have TXT"
This I think will give discretion to implementation authors whether to
pay attention to TXT records or not - or avail such a configurable
option in their software. A compromise if you will. The idea is to make
people s/TXT/SPF/ in their zone files.
I would think that early adopters are more likely to make this change
than those who implement after a RFC publishes the production protocol.
We have to draw a line somewhere. If TXT is allowed indefinitely, then
we might as well not bother getting a SPF RR. But that also means we
would be overloading TXT and imposing on it, which I am against.
/dale