On 29/05/2014 10:24, hua peng wrote:
I found this is a valid RR:
_spf.yandex.ru. 2768 IN TXT "v=spf1
include:_spf-ipv4.yandex.ru include:_spf-ipv6.yandex.ru ~all"
But for A, CNAME, AAAA etc, the underline in hostname is invalid.
Does this make a confusion?
Thanks.
Nope, see RFC 2872 for instance.
--
Nicolas.
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