Matus UHLAR - fantomas wrote:

>> In my understanding, these are different concepts. In particular, RMX
>> doesn't hijack the TXT record, which is one of the major sins of SPF.

> Yes, but they both were designed to do the same work. SPF however can do
> more. TXT was used because nothing else could, at least I think so.

They could have used a prefix "host" to avoid hijacking the main
TXT record. (So you'd query the TXT record for
"__spf__.domain.tld" or something like that instead of the TXT
record for "domain.tld" when checking SPF.

Jonas Eckerman, FSDB & Fruktträdet