-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 In message <d00c360a-0b4b-4353-9b9a-affd62890...@kitterman.com>, Scott Kitterman <skl...@kitterman.com> writes
>Or, as RFC 4408 and RFC 7208 warn against, ESPs don't allow customers to send >mail for anything other than their own domains. ESP customers, don't use ESPs >that do this. leaving aside how practical this advice may be and how it would be possible for anyone to accurately, a priori, determine the ESPs abilities to control their sending arrangements ... ... there's also "clouds" -- where senders are documenting the entirety of the cloud's IP space as being a potential sending location. Although it might be possible to have DNS records track actual usage as resources are spun up and down there's obvious issues around caching. of course we might say not to use clouds that do that ... but the "that do that" part of the sentence would be superfluous - -- richard Richard Clayton Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. Benjamin Franklin 11 Nov 1755 -----BEGIN PGP SIGNATURE----- Version: PGPsdk version 1.7.1 iQA/AwUBZfCS692nQQHFxEViEQJ3qwCfTxLBZW+aOgmaGtTBdMsaspMinakAniaz 2BW+OEMvrpnjG1aBhwEDSzgu =xi5C -----END PGP SIGNATURE----- _______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
