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RE: DNS gurus: What is the max length of a TXT rec ords?

2004-02-09 10:27:21


Well, yes, but I guess I was assuming that you could have a text
record in the 450-500 byte range (depending on other DNS data).  Text
records that go beyond that size I had assumed would switch to TCP.

The point is that instead of having a recommendation that SPF records
SHOULD be well below 500 bytes, I have learned that SPF MUST be below
256 bytes.  And that means that AOL can't double the size of their SPF
record without breaking it up with include: mechanisms.

If so it might make sense to shorten the include modifier tag to 
avoid recursion.

I think we need to accept that DNS is not the ideal vehicle here, but
it is at this stage all that we have.

                Phill

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