Email filtering

I have set up my kids with company email accounts on a exchange 2003.  I am trying to white list approved email senders so they only can get email from email accounts that I can approve.  I think I could do this thru outlook 2003 but they want to use an itouch to also access their accounts.  How do I do this?  Is there also a way to filter email and spam at the server level for my other accounts?
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You are going to be better off using a third party tool, such as Vamsoft ORF or probably more likely, GFI MailEssentials.

The only other way you could play around with it is the junk e-mail filter, but I don't think that is going to be very robust.

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As for your kids, you can certainly do that by right clicking on their account name, choosing excgange general tab then delivery restrictions, here choose accept messages only from and add the addresses that you want.
As to apply filters for spam at the server levels, there are more than one way and best of all free.
First, enable intelligent message filtering. ESM---->Global setting---->message delivery---->intelligent message filtering, here configure it as you wish. The best is to configure it as 6 for spam and 5 for junk mail. you can choose delete for messages that are higher than 6 or to archive them. Then go to servers---->yourservername---->protocols---->smtp---->default smtp virtual server, right click and choose properties--->general--->advanced---->edit and check all the options.
Second, you can use some RBL service (real time block litsts) these are free databses on the internet that contain spam sources. It is very efficiant and best of all free. But be carefull with it. Read a bit about RBL services. In order to enable RBL do the following
ESM---->Global setting---->message delivery---->connection filtering click add and add the following
Display name: spamhaus           DNS
Display name: List-dsbl        DNS
Display name: Spamcop          DNS

You have just eliminited atleast the 85% of your spam for free.


clyochumAuthor Commented:
Under delivery restrictions - only from - it only allows me to add users that are internal users.  How do I add an email address that is not internal to the only from list?  Is there a way to build a distribution list that I can use for multiple users?
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You would need to manually add mail enabled contacts for each address - which would be a complete waste of time.

I still think that a third party tool will do the best job here.
Add the external email addresses as contacts.
Creat a new OU in ADUC, call it external contacts---->right click th contacts OU---> choose create contact---->enter name and last name---->click next---->make sure that create exchange email address is checked--->click modify---->Choose smtp address----type the address.
clyochumAuthor Commented:
Thanks for your help.
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