Re: SMTP Security
- From: John Burridge <JBurridge@xxxxxxxxx>
- To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
- Date: Wed, 9 Jan 2002 15:39:08 -0000
Valid point - What I really want disabled is the Version of SMTP
-----Original Message-----
From: Dar Scott [mailto:dsc@xxxxxxxx]
Sent: 09 January 2002 15:38
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: SMTP Security
http://www.ISAserver.org
At 12:20 PM +0000 1/9/02, John Burridge wrote:
>I have heard that it is a security no-no to have your SMTP server reply
with
>the following when connecting to it through telnet.
>
>"220 <hostname>.<domain>.com Microsoft ESMTP MAIL Service,
> Version: 5.0.2195.1600 ready at Thu, 30 Nov 2000 18:09:43 -0600"
>
>Does anyone know how to disable this response?
I read recently that the RFC requires this and some SMTP servers
won't talk to you without it. You might have to provide fake data
instead of disabling 220.
Dar Scott
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