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Certified Server Validation (CSV) “ An MTA is talking to me directly. Are they OK?”

MIPA. Certified Server Validation (CSV) “ An MTA is talking to me directly. Are they OK?”. D. Crocker Brandenburg InternetWorking mipassoc.org/csv 8/16/2014 7:08 AM. Email Security Functions Assess the safety of an agent. Choosing Who to Make Accountable. Email Path(s) Can Be Complicated.

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Certified Server Validation (CSV) “ An MTA is talking to me directly. Are they OK?”

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  1. MIPA Certified Server Validation (CSV) “An MTA is talking to me directly. Are they OK?” D. Crocker Brandenburg InternetWorking mipassoc.org/csv 8/16/2014 7:08 AM

  2. Email Security FunctionsAssess the safety of an agent D. Crocker Introduction to CSV

  3. Choosing Who to Make Accountable D. Crocker Introduction to CSV

  4. Email Path(s) Can Be Complicated MUA MSA MTA MTA MTA MTA MTA MTA MTA MTA MTA Mail Agents MUA = User MSA = Submission MTA = Transfer MDA = Delivery MTA MDA MDA MUA MUA D. Crocker Introduction to CSV

  5. DNS MSA admin registers authorized MTAs MSA Admin MSA MTA1 MTA2 MTA3 Is MSA ok? Is MTA1 ok? Is MTA2 ok? Is MTA3 ok? Path Registration SchemesSource assesses MTAs along the path MSA MUA MTA1 MTA2 MTA3 Now do this for every recipient! MDA MUA D. Crocker Introduction to CSV

  6. DNS Register MSA Admin MSA MSA OK? Register MTA1 Admin MTA1 MTA1 OK? MTA2 Admin MTA2 Register MTA2 OK? MTA3 Admin MTA3 Register MTA3 OK? Certified Server Validation Local operator authorizes their own MTA MSA MUA MTA1 MTA2 MTA3 MDA MUA D. Crocker Introduction to CSV

  7. CSV In Operation D. Crocker Introduction to CSV

  8. To follow-up… • Mailing list http://mipassoc.org/mailman/listinfo/ietf-clear • CSV specifications http://ietf.org/internet-drafts/… • Client SMTP Validation (CSV)draft-ietf-marid-csv-intro-01 • Client SMTP Authorization (CSA) draft-ietf-marid-csv-csa-01 • Domain Name Accreditation (DNA) draft-ietf-marid-csv-dna-01 • Internet mail architecture • draft-crocker-email-arch-01.txt D. Crocker Introduction to CSV

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