receiving spam emails from our own email addresses
Hi,
i am using OS Win 2003 Server sp2
MS Exchange server 2003 Sp2
Since 4 days some of our staff receiving spam emails using our their own email addresses,
when i see from email address, its their own email address
and some receving from different email address but same domain name, that user doen't exist in our domain...
i contacted our email filter provider websense, they said it looks like spoofing your domain,
how to prevent this, how to to find out who is spoofing our domain. what are the best ways to protect our domain and email system by thsese kind of problems..
i am using OS Win 2003 Server sp2
MS Exchange server 2003 Sp2
Since 4 days some of our staff receiving spam emails using our their own email addresses,
when i see from email address, its their own email address
and some receving from different email address but same domain name, that user doen't exist in our domain...
i contacted our email filter provider websense, they said it looks like spoofing your domain,
how to prevent this, how to to find out who is spoofing our domain. what are the best ways to protect our domain and email system by thsese kind of problems..
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@wmiller - The way to stop this is to use Sender Filtering or anti-spam software. If you are not familiar with Exchange, please refrain from posting in the Exchange Zone.
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To be honest, if you are receiving spoofed mail and you are using a mail filtering service, I would ditch the service and bring it in-house as Websense seems to be a waste of time and money.
Are you paying more than $239 per year for Websense? If you are, ditch them and install Vamsoft. Trial it first, but you will be impressed with the results.
Are you paying more than $239 per year for Websense? If you are, ditch them and install Vamsoft. Trial it first, but you will be impressed with the results.
Have you gotten this issue resolved?
Example, IF you send an email from outlook before sending it click on options you can choose have replies sent to and the email going out will say its from that email instead of the one it was sent from.
The only way I know of to prevent them is to look at the header information from the received email and block emails from the source mail server it came from.
With the email opened in outlook again click options and at the bottom will be the header information look through it for X-MS-Exchange-Organization
Return-Path: pwfbounces@mailer1.texteri
X-MS-Exchange-Organization
OutllokSendOptionsImposter.png