full-disclosure - E-mail spoofing countermeasures (Was: Backdoor not recognized by Kaspersky)

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Message-ID: <Pine.BSI.4.58.0403041311190.17962@dave.horsfall.org>
From: dave at horsfall.org (Dave Horsfall)
Subject: E-mail spoofing countermeasures (Was: Backdoor
 not recognized by Kaspersky)

On Wed, 3 Mar 2004, Lachniet, Mark wrote:

> don't all email systems have a unique message ID on them?

No.

> Sendmail certainly does.

It will generate one, and add one if missing on reception.

-- 
Dave Horsfall  DTM  VK2KFU                         Loyal Unix user since 1975
Booted from Spamtools for dissing the moderator: www.horsfall.org/levine.mail