A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : DKIM Third-Party Authorization for Sender Signer Practices
Author(s) : D. Otis
Filename : draft-otis-dkim-tpa-ssp-04.txt
Pages : 21
Date : 2008-03-18
TPA-label is a DNS-based prefix mechanism for DKIM policy records as
a means to authorize Third-Party domains. This mechanism allows
first-party domains to autonomously authorize a range of third-party
domains in a scalable, individual DNS transaction. This
authorization extends the scope of DKIM policy assertions to supplant
more difficult to administer mechanisms. Alternatives for
facilitating third-party authorizations currently necessitate the
coordination between two or more domains by setting up selector/key
DNS records, DNS zone delegations, or the regular exchange of public/
private keys.
Checking DKIM policies may occur when a From header email-address is
not within the domain of a valid DKIM signature. When a Third-Party
signature is found, TPA-labels offer an efficient means for email
address domains to authorize specific third-party signing domains.
The scope of the authorization may separately assert identity
authentication for From and Sender and Resent-* headers for email-
addresses within the authorizing domain. Identity authentication can
be asserted by the scope of the authorization, even when signed by a
Third-Party domain. In addition, the RFC2821.MailFrom domain can
authorize domains for controlling DSNs.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-otis-dkim-tpa-ssp-04.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
Below is the data which will enable a MIME compliant mail reader
implementation to automatically retrieve the ASCII version of the
Internet-Draft.
- <ftp://ftp.ietf.org/internet-drafts/draft-otis-dkim-tpa-ssp-04.txt>
-
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