NATCO is making available to all of our Internet customers a spam e-mail filtering service to largely eliminate unsolicited e-mail in customers' mailboxes. The cost of this service is $1.99 per month.

The filtering technology identifies spam by analyzing the header and the body of the e-mail message, looking for specific content, patterns and style elements. It also uses several Internet-based real-time blacklists. These blacklists contain known spammer e-mail servers which help the program even more precisely identify unwanted messages.

The following levels of filtering are available to you and you may pick which one you want to use:

A false positive is an e-mail that the filtering software marks as spam when it is actually a message you want to receive. All e-mail that is marked as spam will be put into a special Bulk Mail folder that can be viewed using Natco's Web Mail service, located at https://webmail.natcotech.com. You may check this folder at any time. While using NATCO’s Web Mail, you can delete all of the spam messages or, in the event of a false positive, you can move the message to your INBOX. Any e-mail that remains in the Bulk Mail folder longer than fourteen (14) days will be automatically deleted. Please be sure to check your spam mailbox occasionally so only messages you don’t want are deleted.

How it works:

The filter uses a series of filtering rules to test an e-mail message and assigns a point value for each rule violation that it finds. After all tests are complete, the total score is used to determine whether an e-mail should be delivered to you or filtered out as spam. The filter has varying accuracy depending on the level you choose from above. In the event of a false positive, you may use the following procedure to recover the message:

1. Open your Internet browser software, such as Microsoft Internet Explorer or Netscape Navigator.
2. Go to https://webmail.natcotech.com and log in using your user name and password.
   NOTE: The first time you do this, you will be asked to enter your full name and then click on the SUBMIT button at the bottom of the page.
3. Click on the Bulk Mail folder at left and it will display all the e-mail that has been identified as spam.
4. You can go through all these messages and move the ones you want to keep to the INBOX.
5. After checking all the e-mails that were filtered into Bulk Mail, you can delete them by clicking on the [Empty] link next to the Bulk Mail folder.