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In an effort to make managing email more
efficient, the network support team has introduced a new SPAM filtering
solution. This solution will monitor both inbound and outbound emails
to determine what emails are legitimate for our system. It will
then use a formula to determine whether certain inbound emails are
considered SPAM. Once it has identified an email as SPAM, it will
add a 'Tag' to the subject in the following format : [Suspected
~SPAM~]
Because the filter will only TAG
emails, no email will be rejected or lost due to their potential
SPAM content. Again, they will simply be tagged with a reason for
why it was considered SPAM. Click
here for an explanation of the filtering rules.
This will allow users to take appropriate
action when they receive potential SPAM emails. Users will be able
to setup an Outlook rule which key in on the ~SPAM~ keyword and
will move the item to a designated folder. This will also allow
users to communicate to the network support team legitimate emails
that are being tagged as SPAM. The network support team can then
designate certain domains (e.g. follett.com, microsoft.com, towson.edu)
as legitimate. This will help cut down on mailing lists from legitimate
sources from being considered SPAM.
These instructions
were updated in February 2006 to show Microsoft Outlook 2003 screen
views and menu items.

Messages in your Inbox that have been tagged will
look like the graphic below:

Step
1: Forward legitimate emails to legitimatemail@bcps.org:
- If a message in your Inbox has a been tagged as suspected Spam
but it is legitimate mail forward the entire message to legitimatemail@bcps.org.
- Highlight the message in your Inbox and click the Forward
button
or right click on the message
and select Forward.
- Type legitimatemail@bcps.org in the To:
box and then click Send.
(see graphic below)

- If the mail is indeed Spam you have several choices to make.
You can:
- Simply delete the email.
- Add the sender to the Junk Sender's list. Click
here for directions.
- Forward the entire mail message to blockmail@bcps.org.
Please note that Spammers usually do
not use the same email address twice so you may continue to
get Spam from the same sender even after forwarding the message.
- Highlight the message in your Inbox and click the Forward
button
or right click on the
message and select Forward.
- Type blockmail@bcps.org in the To:
box and then click Send.
(see graphic below)
Step 2: Create an Outlook rule to
move suspected Spam: (optional)
The Department of Technology recommends
that you follow the steps below to create a rule that will remove
suspected Spam from your Inbox and place these messages into another
folder. This will allow users to look through the suspected Spam
when they have time and when they are not in a situation where
students may see mail of an objectionable nature.
- Open up your Outlook account and go to the Tools
menu and select Rules and Alerts. (see graphic
below)

- Click on the New Rules button (see graphic
below)

- Select Start creating a rule from a template
and then click Next (see graphic below)

- Remove the check from the from people or distribution
list. (see graphic below)
- Scroll down and put a check in the box next to with
specific words in the subject or body then click
on the specific words link in the Edit
the rule description box. (see graphic below)

- Type ~SPAM~ in the Specify words
box then click Add. (see graphic below)

- Now click OK. (see graphic below)
- Click on the specified link in the Edit
the rule description box (see graphic below)
- Click on New. (see graphic below)
- Type SPAM in the name box and then click OK.
(see graphic below)

- Click on OK. (see graphic below)

- Click Next. (see graphic below)

- Verify that move it to the specified folder
box is checked and click Next. (see
graphic below)
- Click Next. (see graphic below)

- If you want to move any mail with the ~SPAM~ tag already in
your Inbox to the newly created SPAM folder click the check box
next to Run this rule now on messages already in "Inbox".
Then click Finish. (see graphic below)
- You will see the rule process. It may take several moments.
(see graphic below)
- Click on OK to close Rules and Alerts. (see
graphic below)
- With this new rule turned on all messages marked with the ~SPAM~
tag will be placed in the SPAM folder. From time to time users
should check the SPAM folder to see if any legitimate mail was
placed there. The graphic below shows how to access the SPAM folder.
- Click on Mail (indicated by the red arrow)
to display mail folders above.
- Be sure the box before Mailbox - last name, first
name is opened. (Indicated in graphic below by the
number one.)
- Be sure the Inbox is opened. (Indicated in
graphic below by the number two.)
- Finally the SPAM folder is seen. (Indicated
in graphic below by the number three.)
- Click on the SPAM folder to display contents.
Reason: Bayesian
Bayesian filtering is a learning based system. Bayesian filtering
intelligently looks at the content of our legitimate mail and compares
it with SPAM content. It takes a statistical approach and does not
rely solely on static updates from the vendor, or a network of other
users who can determine, often erroneously, what should be marked
as SPAM for BCPS. This system also looks at BCPS out going mail to
determine what is legitimate messages.
Reason: Keyword
Keyword checking is a method that allows keywords to be configured
which indicate if a mail is SPAM. A majority of SPAM messages use
the same type of words in their advertising efforts.
Reason: Header
Header checking is a method that checks the From field, To field,
and message body and looks for irregularities. These irregularities
are tricks employed by spammers to avoid detection.

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