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Re: SMTP RFC: "MUST NOT" change or delete Received header

Randy Bush <randy@psg.com> Sat, 29 March 2014 08:44 UTC

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Date: Sat, 29 Mar 2014 17:44:51 +0900
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From: Randy Bush <randy@psg.com>
To: "Kevin M. Gallagher" <kevin@ageispolis.net>
Subject: Re: SMTP RFC: "MUST NOT" change or delete Received header
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> What do people today think of the SMTP RFC's current requirement that
> mail programs and servers must not under any circumstances change or
> delete Received: headers?

as someone who has to debug email problems, they are very very helpful

> Is exposing sender IP addresses to any attacker who can view e-mail
> headers

perhaps an apporach would be to limit who can view email headers

randy

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