That is a behavior of every mail server that I know of.  SOme firewalls (PIX, for 
example) allow you to mask this.

Regards,

Howie

----- Original Message ----- 
From: "Mark Woods" <[EMAIL PROTECTED]>
To: "inFusion Support List" <[EMAIL PROTECTED]>
Sent: Tuesday, January 27, 2004 11:16 AM
Subject: Re: [iMS] remove server software info from SMTP greeting


> At 15:34 27/01/2004, you wrote:
> >You can modify the Received header in the incoming mail but not the server 
> >preamble.
> 
> Ok, but why? To me, this looks like a way a potential attacker can learn 
> something about my mail server. I know it's not particularly significant, 
> but it would be nice to be able to hide information from public view which 
> does not need to be public.
> 
> 
> Mark
> 
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