[dkim-ops] ADSP and Subdomain

Byung-Hee HWANG bh at izb.knu.ac.kr
Thu Nov 13 17:07:10 PST 2008


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Hi, last night, i checked again ADSP specs. In the section 4.1 of ADSP
specs [1], i felt some confusion. First let's see example, below:

User's Identity (Author Address): "i=bh at hp.izb.knu.ac.kr"
DKIM-Signature's Domain: "d=izb.knu.ac.kr"
DNS's "t=" tag: absent or "t=y"
DKIM-Signature's selector: "s=tao"

In the above case, how must i define the ADSP RR of "hp.izb.knu.ac.kr"?

	_adsp._domainkey.hp.izb.knu.ac.kr. IN TXT "dkim=all;"

		or

	_adsp._domainkey.izb.knu.ac.kr. IN TXT "dkim=all;"

Which is correct? The "hp.izb.knu.ac.kr" is the subdomain of
"izb.knu.ac.kr". And actually i set the flag "t=y" into the TXT RR of
"izb.knu.ac.kr" for using subdomains. Can you please give me a clear
explanation?

byunghee

[1] <URL:http://dkim.org/specs/draft-ietf-dkim-ssp-04.html#dnsrep>
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