full-disclosure - SMTP open relays and RFC (was: Backdoor not recognized by Kaspersky)

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Message-ID: <20040304085237.GA3021@josefina.dcit.cz>
From: martin.macok at underground.cz (Martin Mačok)
Subject: SMTP open relays and RFC (was: Backdoor not recognized by Kaspersky)

On Thu, Mar 04, 2004 at 07:57:08PM +1300, Nick FitzGerald wrote:

> Hmmm -- you realize that a lot of the behaviour you chastise in your
> first point is because the systems involved are, in fact, being
> terribly compliant mail _relays_ as defined in the RFCs??

Open relays are not RFC compliant. See RFC 2821 (SMTP) section 3.7
(Relaying) and RFC 2505 (Anti-Spam Recommendations) section 2.1.
(Restricting unauthorized Mail Relay usage).

Martin Ma?ok