SERVICE: Why don’t ISPs validate all return addresses?

Published on by reinkefj

Don’t the ISPs have the capability to do a domain look up?

We need to revise the email handling protocols. (imho)

ISPs should insist that peers do some validation.

For example, if say COMCAST and YAHOO are peers, then, at the very least, COMCAST should not accept any email with a Yahoo return address that doesn’t originate from Yahoo. Yahoo should validate every email it peers to COMCAST has having originated from a valid email address. If COMCAST Users mark it as spam, then that fact should be fed back to Yahoo for appropriate action.

And, visa versa.

(I laugh sarcastically when I get spam with a Yahoo bogus return address.)

ISPs like Comcast and EMail providers like Yahoo could “cut off” offenders.

It would seem to be in everyone’s best interest to truncate the flow of bogus email.

Seems easy to me?

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One thought on “SERVICE: Why don’t ISPs validate all return addresses?”

  1. Such ideas have indeed been discussed and, I believe, partially implemented.

    However, they are also seen as a “necessary evil” when they are discussed, e.g. because they bring disadvantages in performance and because they limit the ability to send legitimate emails from a mail server from the “wrong” domain.

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