The Mailbox Reputation Network

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Examples

  1. Typical corporate or vanity domain

    _mrn.acme.com IN TXT "v=mrn1 sponsor=sponsor.net"
*._mrn.acme.com IN TXT "v=mrn1 principal=acme.com"
*._mrn.acme.com._a._mrn.acme.com IN TXT "OK"
    In this example, ACME Ltd claims to be sponsored by sponsor.net, and all local mailboxes (employees) are held out as agents of the company.

    ACME Ltd's sponsorship is confirmed by an exists record at sponsor.net: 

    acme.com._p._mrn.sponsor.net IN TXT "OK"

  2. Traditional internet or mail service provider domain

    _mrn.isp.net IN TXT "v=mrn1 sponsor=sponsor.net"

staff._mrn.isp.net IN TXT "v=mrn1 principal=isp.net"
staff._mrn.isp.net._a._mrn.isp.net IN TXT "OK"

*._mrn.isp.net IN TXT "v=mrn1 peer=isp.net"
*._mrn.isp.net._p._mrn.isp.net IN TXT "OK"
    In this example, ISP Ltd claims to be sponsored by sponsor.net, and the staff mailbox is a designated agent of the company. All other local mailboxes (customers) are in turn sponsored by ISP Ltd.

    ISP Ltd's sponsorship is confirmed by an exists record at sponsor.net: 

    isp.net._p._mrn.sponsor.net IN TXT "OK"

  3. Free mail service provider domain

    _mrn.freemail.net IN TXT "v=mrn1 sponsor=sponsor.net"

staff._mrn.freemail.net IN TXT "v=mrn1 principal=freemail.net"
staff._mrn.freemail.net._a._mrn.freemail.net IN TXT "OK"

bob._mrn.freemail.net IN TXT "v=mrn1 peer=alice@isp.net"
alice._mrn.isp.net._p.bob._mrn.freemail.net IN TXT "OK"
    In this example, Freemail Ltd claims to be sponsored by sponsor.net, but only the staff mailbox is a designated agent of the company. No other local mailboxes (anonymous signups) are sponsored by Freemail Ltd. Instead, Freemail Ltd expects mailbox users to obtain sponsorship independently, and provides support for MRN publishing in their DNS.

    The mailbox user bob@freemail.net claims to be sponsored by alice@isp.net. Bob's sponsorship is confirmed by an exists record at Alice's ISP: 

    bob._mrn.freemail.net._p.alice._mrn.isp.net IN TXT "OK"

    Freemail Ltd's sponsorship is confirmed by an exists record at sponsor.net: 

    freemail.net._p._mrn.sponsor.net IN TXT "OK"

last updated: Thu, 01 Jan 1970 01:00:00 +0100

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