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Stopping Spam for distribution groups

Hi guys,

I am running exchange 2003 and am recieving alot of NDR spam and normal spam on some of my distribution groups, on the distribution group receiving the largest amount of spam the users recieve a valid email around once a fortnight, but probably get 100 spam messages a day to the distribution groups email address.  

I would rather not delete the distribution group as the valid emails that come through to it are fairly important,  I was wondering if there is a better method to filter to recieve the valid emails and filter out as much spam as possible (most the spam is NDR spam, so it bypasses most spam filters).

Cheers guys
0
SM17CH
Asked:
SM17CH
3 Solutions
 
JoWickermanCommented:
Hi SM17CH,

What I have done with some of my Distibution Groups is that under Properties -> Exchange General, I have activated Message Restrictions to accept messages only from certain people.

I'm not sure if this will work for you, but it's worthwhile checking out.

Cheers
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dfxdeimosCommented:
In my own personal opinion, Postini works AMAZINGLY.

http://www.postini.com
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dfxdeimosCommented:
Oh, and it is pretty cheap. If you buy it in bulk it is like $2 / YR for a mailbox.
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Creating Active Directory Users from a Text File

If your organization has a need to mass-create AD user accounts, watch this video to see how its done without the need for scripting or other unnecessary complexities.

 
ifreqCommented:
dfxdeimos, are you a salesman or an expert?
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dfxdeimosCommented:
I am not a salesman.

Postini is just a solution that I have used with many of the different companies that I work with and in my experience it works like a charm. I use it on my personal domain and it cut down the spam (including NDR floods) that I received from about 100 / day to about 1 / week.
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JoWickermanCommented:
Hi,

Any luck with this issue and solutions? Can you close the call or let us know if you require more assistance?

Cheers.
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SM17CHAuthor Commented:
Hi guys,
I am looking at implementing postini, I have heard good things about the program and will see how it holds up.
Cheers
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