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MartNet WebAdmin - SpamAssassin Mail Filter
Using SpamAssassin to filter spam out of your email box

The Spamassassin Mail Filter helps you filter out unsolicited Spam emails from your regular email.

How Spam Assassin works:

SpamAssassin is a mail filter used to identify Spam. It uses a number of tests to determine if a piece of email is legitimate or Spam. If it is determined to be Spam, it can either sorted to a separate mail folder for further analysis, thrown away, or delivered back to your inbox marked as Spam. There are also a number of ways you can fine tune your filtering to make sure legitimate email is let through and email that you don't want gets blocked.

One way Spam Assassin determines Spam is by Hits. Hits are a point scale used to determine if a piece of mail is legitimate or not. For example, if a message mentions something about "viagra" it will get a point. If it written in all CAPS it may get another point. If the amount of combined points a message gets reaches or exceeds the point threshold, it gets marked as Spam.

Sometime you may have email addresses that you know would never send you spam, so you can place them in a whitelist to always be allowed through. You may have an email address or domain that always sends you messages that you do not want to receive. These ones can be placed on a blacklist and will always be treated as Spam.

For more information on Spam Assassin, check out their web site at : http://spamassassin.org/

How to turn on Spam Assassin:
  1. Log in with your username and password to the WebAdmin interface
  2. In the "Mail" section, click on the button that's labeled "SpamAssassin Mail Filter"
  3. Click on "Turn Spam Assassin ON"
  4. Choose one of the following:
    • Permanently Delete - this will delete all messages marked as Spam. This is not recommended to start because if you have legitimate email that is blocked by accident, it cannot be recovered. If you are comfortable with the way the spam filter works and is configured, use this mode to delete all spam.
    • Deliver normally with SPAM tags - This will deliver Spam normally to your mail box but will mark it as SPAM in the subject line and tell you in the body of the message why the message is marked as Spam. You can then sort it with your email program. Here are instructions on how to do that with Outlook.
    • Save to mail file - This is the default setting. This will save Spam to a separate folder where you can check the messages in the "Spam Mail" section of "Spamassassin Mail Filter" on webadmin. By default, it is set to save to "mail/spam" on your account.
  5. Click on the button that says "Turn Spam Assassin ON
Checking Your "Spam Mail" folder

If you've chosen the option to "save to mail file", it is stored on your account and can be reviewed via the WebAdmin control panel in "Spam Mail"

IMPORTANT: If you choose to save your mail to a Spam folder, you must empty out your Spam Folder periodically. The Spam that gets collected counts against your disc quota and will build up if is not cleaned out. If you go over your disc quota, this will cause problems and may cause new mail to NOT be delivered to your account.

Checking your Spam Mail folder:
  1. Log in with your username and password to the WebAdmin interface
  2. In the "Mail" section, click on the button that's labeled "SpamAssassin Mail Filter"
  3. Click on "Spam Mail"

From here, you have a few options of what to with the Spam. You can view the message by clicking on the title or you can apply an action to one or more of the messages

To apply and action: First, you select all of the messages that you want to perform an action on by selecting the box next to the message, or by selecting all of the messages by clicking on "Select All".

Actions
  • Move to Inbox - This will move selected emails back into your inbox after removing the Spam Assassin tags
  • Move to Inbox and Allow Sender - This does the same as the above option but adds the senders email to your "whitelist" so all future emails will not be marked as Spam
  • Delete - This will delete the selected emails
  • Delete and Report to Razor - This does the same as the above option but reports it to the Razor Spam database. NOTE: This is an advanced option. Don't choose this option unless you know what you are doing.
Fine Tuning Spam Assassin

There are a number of ways to configure Spam Assassin, but the average user usually only needs to set a few of them for regular use. Most important of these is the threshold for Hits. Turning the threshold up allows more Spam to go through, turning it down reduces the amount of Spam going through but may increase the amount of legitimate mail accidentally getting marked as Spam. You can adjust this to your liking

Setting your Hit point Threshold
  1. Log in with your username and password to the WebAdmin interface
  2. In the "Mail" section, click on the button that's labeled "SpamAssassin Mail Filter"
  3. Click on "Spam Classification"
  4. Next to "Hits above which a message is considered spam" click on the second option and set your desired Hit threshold in the box next to it (Ex. 7, 5.75, 4.5, etc)
  5. Click on the "Save" button

There are other options on this page that you can change but these settings are for experts only. Please use caution when adjusting these settings

Setting up Black Lists and White Lists

You may have email addresses that you know would never send you spam, so you can place them in a Whitelist to always be allowed through. You may have an email address or domain that always sends you messages that you do not want to receive. These ones can be placed on a Blacklist and will always be treated as Spam.

Adding and email address to the Whitelist - Never mark as Spam
  1. Log in with your username and password to the WebAdmin interface
  2. In the "Mail" section, click on the button that's labeled "SpamAssassin Mail Filter"
  3. Click on "Allowed and Denied Addresses "
  4. Under "From: addresses to never classify as spam" add the email address you would like to NEVER mark as Spam. Add one per line, hitting return to start a new line
  5. You can choose to Whitelist email address in a number of different ways:
    • Allow by email address: user@domain.com - this allows email from one particular address
    • Allow by domain: *@domain.com - this allows email from anyone at a particular domain
    • Allow by subdomain: *.domain.com - this allows email from anyone at a particular sub domain
  6. Click on the "Save" button

Adding and email address to the Blacklist - Always mark as Spam
  1. Log in with your username and password to the WebAdmin interface
  2. In the "Mail" section, click on the button that's labeled "SpamAssassin Mail Filter"
  3. Click on "Allowed and Denied Addresses "
  4. Under "From: addresses to always classify as spam" add the email address you would like to ALWAYS mark as Spam. Add one per line, hitting return to start a new line
  5. You can choose to Black list email address in a number of different ways:
    • Block by email address: user@domain.com - this blocks email from one particular address
    • Block by domain: *@domain.com - this blocks email from anyone at a particular domain
    • Block by subdomain: *.domain.com - this blocks email from anyone at a particular sub domain
  6. Click on the "Save" button
How to turn off Spam Assassin

You may decide to turn of Spam Assassin. Here's how to do that

To completely disable Spam Assassin
  1. Log in with your username and password to the WebAdmin interface
  2. In the "Mail" section, click on the button that's labeled "Procmail Mail Filter"
  3. Click on any title under "Action to Take" that contains the word "spam"
  4. Hit the "delete" button at the bottom left hand side of the page
  5. Repeat for every "Action to Take" that contains the word "spam"


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