More info: [snip] Yahoo and Cisco Monday plan to announce they will submit their e-mail authentication specification, DomainKeys Identified Mail (DKIM), to the IETF to be considered as an industry standard. Discussions on DKIM will begin at the IETF meeting in Paris scheduled to run between July 31 and August 5, Yahoo and Cisco officials said. DKIM combines Yahoo's DomainKeys and Cisco's Internet Identified Mail, two e-mail authentication technologies developed separately, which the companies announced in June they would combine with the intention of licensing the resulting specification royalty-free throughout the industry. [snip] http://www.networkworld.com/news/2005/071105-yahoo-cisco.html - ferg p.s. Of course, this development comes on the heels of two other methods for e-mail authentication already published by the IETF as "experimental" RFC's: "Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail" and Microsoft's "Sender ID: Authenticating E-Mail". http://news.com.com/Antispam+proposals+advance/2100-1032_3-5768498.html -- "Fergie", a.k.a. Paul Ferguson Engineering Architecture for the Internet fergdawg@netzero.net or fergdawg@sbcglobal.net ferg's tech blog: http://fergdawg.blogspot.com/