Date: Fri, 5 Jan 2007 21:28:59 -0600 From: "Rob W." <rob@fiberuplink.com> To: <freebsd-questions@freebsd.org> Subject: Re: Mail being sent from my domain... Message-ID: <002301c73142$ce57c690$0a32a8c0@rob> References: <00bb01c73134$b061fa60$0a32a8c0@rob> <20070105212536.G8738@tbbqjvyy.6qbyyneqvnyhc.pbz>
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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@larseighner.com> To: "Rob W." <rob@fiberuplink.com> Cc: <freebsd-questions@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 > >
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