Mail being sent from my domain...

[Rob W.]

Ok, and I suppose by chance there is no way to prevent this from happening 
or a way to stop it huh?


----- Original Message ----- 
From: "Lars Eighner" <luvbeastie at larseighner.com>
To: "Rob W." <rob at fiberuplink.com>
Cc: <freebsd-questions at freebsd.org>
Sent: Friday, January 05, 2007 9:25 PM
Subject: Re: Mail being sent from my domain...


> On Fri, 5 Jan 2007, Rob W. wrote:
>
>> Is it possible for people to send email out from my domain name and have
>> fake users acting as comming from my network?
>
> Yes, if you have defeated the security features of your mail server either
> accidentally or on purpose, but that is not what is happening in this 
> case.
> There appears to be a recurrance (or mutation) of a virus we have seen
> before.  The mail is not originating on your server.  Your domain is being
> spoofed by the infected computer(s).  The forged mail probably would not
> escape detection by a knowledgeable human, but it is good enough to fool
> some autoresponders and mail tossers, which is why you get the bounces.
>
> -- 
> Lars Eighner
> http://www.larseighner.com/index.html
> 8800 N IH35 APT 1191 AUSTIN TX 78753-5266
>
>