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Possible SPAM coming from inside my network

Can anyone explain this to me? I get these from time to time. There are always to different places.

Your message did not reach some or all of the intended recipients.

      Subject:      **Message you sent blocked by our bulk email filter**
      Sent:      10/12/2007 3:04 AM

The following recipient(s) cannot be reached:

      ilovedj4life@td7.ru on 10/12/2007 3:06 AM
            The e-mail account does not exist at the organization this message was sent to.  Check the e-mail address, or contact the recipient directly to find out the correct address.
            <mail2.santehnika7.ru #5.1.1>
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wunderlich
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wunderlich
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5 Solutions
 
frostburnCommented:
That message in itself is also a spam message.
We get plenty of those from time to time and its not to say that the message is being sent from within your organization.

Hope this helps
-Michael
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grbladesCommented:
Its caused by a spammer forging the from: address in emails. They happened to pick your email address and one of the recipients they sent the mail to and the recipient is poorly configured and sends a bounce back to the sender for any mail clasified as spam.
The mail therefore gets sent back to the senders address which was forged which is yourself.
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frostburnCommented:
This is a technique employed by spammers and is a very informative read.

http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci894881,00.html

Cheers!
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wunderlichAuthor Commented:
So I take it that there is no way of me stopping these things from happening?
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war1Commented:
Greetings wunderlich !

Looks like a spammer has spoofed your address sending spam emails with your address in the From field. When the email is rejected by receiving server, it comes back to you.

You cannot do much about the spoofing except report the email to FCC.
http://esupport.fcc.gov/index.htm?job=spam_filters

Hope this helps, war1
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frostburnCommented:
You need a up-to-date mail/spam filter.
We use Surfcontrol here and it catches 97% of these kinds of messages(we delete 10's of thousands every day) but any similar product should do the trick.

Not running a mail/spam filter on mail is just not an option with 1 in 3 emails being spam.
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wunderlichAuthor Commented:
Frostburn,

I have a SPAM filter for incoming mail. Barracuda, but it will only do incoming or outgoing. Not both..Any suggestions. I am going to start send such to FCC.
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wunderlichAuthor Commented:
Thanks for the help guys. I just submitted this to FCC.
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war1Commented:
Here is a way to create your own stationary. It is really just another HTML page
http://www.g4tv.com/screensavers/features/35015/Spice_Up_Your_Email_With_Outlook_Stationery.html

Here is a step by step procedure to create a particular type of stationary
http://bonzawebsites.com/create_email_stationery.htm
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