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03.07.2008 at 06:44AM PST, ID: 23222982
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7.4

Preventing incoming mail from senders not in global address list

Asked by carls64 in Symantec Anti-Virus Software, Exchange Email Server, Anti-Spam Email Software

Tags: , ,

We User Microsoft Exchange Server 2003 and Symantec Antivirus for Exchange (Not End point Security) as well as the premium Ant-Spam protection. All in all it does a great job of filtering email. However spammers are getting smarter by the day, and we regularly get email from users in our organization that simply do not exist, like bob@orgainization.org, no bob here!

We also seem to get a number of hijacked emails from existing people on our domain, so when the mail gets bounced it looks like its coming from within our organization. We validate each of these to be sure we are not sending these out ourselves, but I am not sure there is any way to stop spoofed emails.

Lastly we pipe all incoming email from the net through a postfix/Linux server before it reaches our exchange server, for outgoing email we do the same, we have exchange send it to the postfix server then out the net. (I don't trust exchange to be exposed to the net, that is just me).

Thank you in advance!
Carl Slaughter
IT Administrator
SCFCU

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[+][-]03.07.2008 at 06:54AM PST, ID: 21070617

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[+][-]03.07.2008 at 06:55AM PST, ID: 21070631

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[+][-]03.07.2008 at 07:01AM PST, ID: 21070699

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[+][-]03.07.2008 at 07:22AM PST, ID: 21070977

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[+][-]03.10.2008 at 12:47AM PDT, ID: 21084622

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About this solution

Zones: Symantec Anti-Virus Software, Exchange Email Server, Anti-Spam Email Software
Tags: Microsoft, Exchange / Outlook, 2003 / 2003 - 2007
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Solution Provided By: Tominov
Participating Experts: 3
Solution Grade: B
 
 
[+][-]03.10.2008 at 02:39AM PDT, ID: 21084989

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[+][-]03.10.2008 at 05:47AM PDT, ID: 21085805

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[+][-]03.10.2008 at 07:11AM PDT, ID: 21086476

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[+][-]03.10.2008 at 07:35AM PDT, ID: 21086685

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[+][-]03.10.2008 at 07:56AM PDT, ID: 21086898

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