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The more complex example shows how you can split the rules up between the administrator and the user. This time we will discuss the most simple spam filter rule. Just two simple content filters make up this very effective spam detection filter; a white list and a spam rule. That's all.
This procedure can be done in two ways. First, you can implement this spam filter as the domain administrator by logging on to the domain administrators account and defining a "Domain Content Filter". There is an up side to doing it this way and a down side. The up side is that the only place content filters need to be placed is on the administrators account and like an umbrella, they cover all the users of a domain. Add a new user, that user is automatically under the umbrella and protected. The down side to this configuration is that the "Trusted Users" list (white list rule) has to be managed by the system administrator. So if you find mail that you want going to SPAM, you need to tell your system administrator to add the sender or the sender's domain to the trusted senders list. In most cases the mail administrator available for such a minor task as adding somebody or a domain to the trusted senders list.
The second configuration which also works very effectively is to create the filter on your own account. Since it is such a simple filter to create it will only take a minute or two and does not have to be maintained. Using this configuration also has it's pros and cons. The up side is that the white list is maintained on the local user's account so it is very easy for the user to add their own email addresses or domains to the trusted senders list. The down side is that every user must set up their own filters but again, that is not such a big deal and only takes but a minute or two.
In both cases before we begin with the rule you should first decide where you want the SPAM to go. If you are going to do it as the administrator for all users then we suggest you create a new account called spam@yourdomain.com (yourdomain.com is your own domain). All spam will go to that account. You can use the new sharing features of the email system and share the inbox of the spam account so everyone can view it to see what is in it..
If you are going to set your filters locally on your own account then you have two options. You can still send mail to an account called spam@mydomain.com, or you can create a new folder in your own account called "Junk" or anything you like and send the mail there.
In either case you should set up the email address for spam or the folder before proceeding with the filter.
The procedure starts by logging on to the web based email. If you are going to set the rule up as a domain rule then log on as webmaster@mydomain.com, and if you are going to set the rule locally on your own account then log on as your email address and passord.
STEP 2: Create your spam filter rule. The following example assumes you are setting it up under your own account. The only difference is the following menu. If you were setting it up as the domain administrator you would select "Domain Settings" and "Domain Content Filtering" in the following menu.
From the Settings menue choose the "My Content Filtering" menu option.
After selecting the content filtering option the following dialog will appear. At this point you will press the "Add Filter" menu option to proceed. Of course you have already set up your white list rule and it is the first rule on the list.
After selecting the Add Filter option the following dialog will appear.
This dialog box will present you with options you will see each time you set up a new content filter. In this case our content filter will be very simple. We wish to instruct our filter to look at the email headers for some information we will set in the next option. Check the box "Email Headers" and then press "Next" on the top menu bar.
This is where you tell the filter what to look for in the header of the email. Since we want to look for any one or more of these tags you should make sure that the "OR" button is highlighted. Then enter the strings into the list box exactly as they are shown below. Make sure you capitalize when needed and have a space between the X-Spam-Status: and the "YES". When you are finished entering these tags press "Next" on the menu bar.
Now you must tell your filter what you want to do with the email once you identify a tag in the header. If no tags were identified in the header then the email is delivered normally. In the example below you we are electing to send the mail to a mail box we created called "SPAM". When you are done with the action you want to select press "Save"
That's all that is necessary to create what will be a very effective rule that will keep SPAM out of your email account. When you do happen to come across a piece of mail that is tagged as SPAM but you want it delivered all you need to do is add the sender, or the sender's domain to the "Trusted Senders" list. Press here if you want to review how to add information to the trusted senders list.