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Message filtering in Exchange 2K

By swomack ·
I was wondering if anyone knew of a way to add a list of email addresses and domains to the list of messages filtered in Exchange 2000 System Manager. This is under the Filtering tab in Message Delivery Properties in Global Settings. I can add them one at a time but would like to add a huge list I have. Also, does anyone know if having thousands of addresses and domains in the filtering list will slow down my Exchange 2000 server. It's a new server with lots of power.

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Message filtering in Exchange 2K

by BJSABS In reply to Message filtering in Exch ...

To Filter Messages on the Exchange Server ( SPAM )

1) Choose where you want the filter applied.
For Server this is the SMTP Virtual Server which is located at:
Exchange System Manager > Servers > Server > Protocols > SMTP > Default SMTP Virtual Server.
2) Right Click SMTP Virtual Server, Select Properties, Advanced, Edit, check Apply Filter
3) Then assign the filter to our external IP Address
4) Next go to Exchange System Manager > Global Settings > Message Delivery
5) Right Click Message Delivery, Select Properties, Filtering.
6) Then check off Archive Filtered Messages and Accept Messages Without Notifying Sender of Filtering
7) Add the domains to want to filter in to the provided area
You can Filter by E-Mail Address, Display Name , Domain ( *@Domain.com )
And child Domains (*@*.Domain.com)

The filtered messages that are archived are kept in:
\ Exchsvr \Mailroot\vsi1 on Server


To Remove a Filter follow Steps 1 and 2 , then uncheck ?Apply Filter?
Hope this helps

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Message filtering in Exchange 2K

by swomack In reply to Message filtering in Exch ...

Thanks for the reply but I know how to turn on filtering and how to add items to be filtered but what I was asking was:
"I can add them one at a time but would like to add a huge list I have. Also, does anyone know if having thousands of addresses and domains in the filtering list will slow down my Exchange 2000 server. It's a new server with lots of power. "

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Message filtering in Exchange 2K

by McKayTech In reply to Message filtering in Exch ...

You should be able to do this through an ADSI script. A good place to start would be with the ADSI Scripting Primer on Microsoft's site. There is also a book by Thomas Eck called ADSI Scripting for Windows Administration. It should be relatively trivial to write a script to populate the filter list from your text list.

As far as the slowing, I haven't seen much of a negative impact on my production server, primarily because e-mail is not that time-sensitive. With a relatively high mail volume, I've seen delays of up to 18 seconds for filtering and content scanning but more typically it's less than 5 seconds per message and therefore completely unnoticed by the end users.
(This is at a volume of 70-100,000 messages per day).

regards,

paul

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Message filtering in Exchange 2K

by swomack In reply to Message filtering in Exch ...

Thanks but I don't think I have the time to learn ADSI scripting. I found a person on Google that said he found a way to add entries to the filter list in bulk but he said you have to be VERY careful when adding something to the AD and that it tookhim 30 lines of code to do it. I am not actually going to try it because I also found out on Google that there is a limit to the number of entries you can put in the filter list. One guy said that after about 1000 entries he got the following message:
The administrative limit for this request was exceeded.
Facility: LDAP Provider
ID no: 80072024
Exchange Sytem Manager

It was suggested to him that he get a spam filter. Open Relay Filter from www.vamsoft.com was suggested. I am using the 30 day trial version now and really like it. Of course it doesn't catch all spam but it does catch a lot. You can also build your own filter list in it like in E2K System Manager and one great thing it can do is block email to old employee addresses. Just put them in the recipient blacklist. That feature alone is worth the $99 it will cost if I decide to buy it.

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Message filtering in Exchange 2K

by swomack In reply to Message filtering in Exch ...

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